US Rep. Paul Ryan (R-Wisconsin) says he'd seek the House of Representatives speakership if he is the "unity candidate" for the party.
Ryan is seeking assurances from within the GOP about his run -- specifically that all areas of the party share his vision for the divided House going forward. The major caucuses would also need to endorse him.
Additionally, Ryan called for certain rules changes to strengthen the speakership and address other members' concerns, while asking to keep his calendar open to spend time with his family.
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Paul Ryan says he'd run for House speaker -- but there's a big catch
Speaker of the House Denis Hastert (L) administers the oath of office to Rep. Paul Ryan (R) of Wisconsin as his family looks on January 6, 1999 at the start of the 106th Congress. The oath is a recreation as the formal oath is administered to the entire congress as a body on the floor of the House. (photo by Rex Banner)
UNITED STATES - DECEMBER 12: Rep. Paul Ryan, R-Wis., speaks at a news conference in which House Republican leaders called for Permanent Tax Relief. (Photo By Tom Williams/Roll Call/Getty Images)
KRT US NEWS STORY SLUGGED: SOCIALSECURITY-DISCUSSION KRT PHOTOGRAPH BY GEORGE BRIDGES/KRT (April 14) Conversation on Social Security between Rep. Paul Ryan (R-WI), shown, and William Novelli, head of AARP, April 5, 2005 (lde) 2005 (Photo by George Bridges/MCT/MCT via Getty Images)
UNITED STATES - JULY 22: MEDICARE BRIEFING--Rep. Paul Ryan, R-Wisc., speaks at a Cato Institute briefing on Medicare reform in the Rayburn House Office Building. Tom Miller, director of Health Policy Studies at Cato, looks on. (Photo by Scott J. Ferrell/Congressional Quarterly/Getty Images)
WASHINGTON - SEPTEMBER 24: Rep. Paul Ryan (R-WI) questions Peter Orszag, director of the Congressional Budget Office, during a hearing on Capitol Hill about the impact of recent market turmoil on the federal budget on September 24, 2008 in Washington, DC. Orszag reported that while the impact is currently unknown, it is likely to be substantially less than $700 billion. (Photo by Brendan Hoffman/Getty Images)
WASHINGTON - APRIL 27: House Budget Committee ranking member Rep. Paul Ryan (R-WI) (R) delivers an opening statement during a conference committee meeting with Senate Budget Committee Chairman Kent Conrad (D-ND) (L) and House Budget Committee Chairman John Spratt (D-SC) in the U.S. Capitol April 27, 2009 in Washington, DC. House and Senate lawmakers have already struck a tentative deal on the FY2010 budget resolution and they hope to file a conference report after today's meeting. (Photo by Chip Somodevilla/Getty Images)
WASHINGTON - MARCH 19: (L-R) U.S. House Minority Whip Rep. Eric Cantor (R-VA), Rep. Dave Camp (R-MI) and Rep. Paul Ryan (R-WI) listen during a news conference on the health care legislation March 19, 2010 on Capitol Hill in Washington, DC. The House will vote on the Health Care Reform Legislation on Sunday, March 21. (Photo by Alex Wong/Getty Images)
Representative Paul Ryan, a Republican from Wisconsin and chairman of the House Budget Committee, speaks during a news conference at the U.S. Capitol in Washington, D.C., U.S., on Tuesday, April 5, 2011. U.S. House Republicans today unveiled a plan to overhaul the federal budget and slash the deficit in coming years by about three-quarters, with a $6-trillion cut in spending and 25 percent cap on tax rates. Photographer: Joshua Roberts/Bloomberg via Getty Images
MEET THE PRESS -- Pictured: Rep. Paul Ryan (R-WI) left, and moderator David Gregory, right, appear on 'Meet the Press' in Washington, D.C., Sunday, April 10, 2011. (Photo by William B. Plowman/NBC/NBCU Photo Bank via Getty Images)
MILWAUKEE, WI - APRIL 01: Republican Presidential candidate, former Massachusetts Gov. Mitt Romney (R) jokes with U.S. Rep Paul Ryan (C) (R-WI) during a pancake brunch at Bluemound Gardens on April 1, 2012 in Milwaukee, Wisconsin. With less than a week before the Wisconsin primary, Mitt Romney continues to campaign through the state. (Photo by Justin Sullivan/Getty Images)
WASHINGTON, DC - APRIL 26: House Budget Chairman Rep. Paul Ryan (R-WI) is introduced before speaking about 'America's Enduring Promise,' and the federal budget, in a speech at Georgetown University April 26, 2012 in Washington, DC. During his speech, Ryan said that his proposed budget confronts the nation's growing $15 trillion debt before it impacts future generations of Americans. (Photo by Win McNamee/Getty Images)
NORFOLK, VA - AUGUST 11: Republican presidential candidate, former Massachusetts Gov. Mitt Romney (L) jokes with Rep. Paul Ryan (R-WI) (R) after announcing him as the 'next PRESIDENT of the United States' during an event announcing him as his running mate in front of the USS Wisconsin August 11, 2012 in Norfolk, Virginia. Ryan, a seven term congressman, is Chairman of the House Budget Committee and provides a strong contrast to the Obama administration on fiscal policy. (Photo by Win McNamee/Getty Images)
UNITED STATES - SEPTEMBER 14: Rep. Paul Ryan, R-Wis., Vice Presidential candidate, waves to the crowd after addressing the Values Voter Summit at the Omni Shoreham Hotel in Woodley Park. Photo By Tom Williams/CQ Roll Call)
NEWPORT NEWS, VA - SEPTEMBER 18: Republican vice presidential candidate, U.S. Rep. Paul Ryan (R-WI), pauses as he speaks during a campaign rally at Christopher Newport University September 18, 2012 in Newport News, Virginia. Ryan continued to campaign for the upcoming presidential election. (Photo by Alex Wong/Getty Images)
MIAMI, FL - SEPTEMBER 22: Republican vice presidential candidate, U.S. Rep. Paul Ryan (R-WI) hugs waitress, Lourdes Alcerro, during a campaign stop at Versailles restaurant in the Little Havana neighborhood on September 22, 2012 in Miami, Florida. Ryan continues to campaign for votes across the country. (Photo by Joe Raedle/Getty Images)
Republican presidential candidate Mitt Romney (R) and running-mate Paul Ryan share a laugh as they are introduced at a campaign rally September 25, 2012 at Dayton International Airport in Vandalia, Ohio. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)
Representative Paul Ryan, a Republican from Wisconsin, arrives at a news conference on Capitol Hill in Washington, D.C., U.S., on Tuesday, Oct. 20, 2015. Ryan said he'd be willing to run for speaker of the U.S. House if Republicans unify behind him now, end leadership crises and let him continue spending time with his family. Photographer: Andrew Harrer/Bloomberg via Getty Images
Representative Paul Ryan, a Republican from Wisconsin and chairman of the House Ways and Means Committee, center right, walks down the steps of the U.S. Capitol building following a vote in Washington, D.C., U.S., on Friday, Oct. 9, 2015. Ryan is under heavy pressure from fellow Republicans to run for U.S. House speaker after a hard-line faction forced Speaker John Boehner to resign and his top lieutenant to drop out of the race. Photographer: Andrew Harrer/Bloomberg via Getty Images
Representative Paul Ryan, a Republican from Wisconsin, walks to a meeting in the basement of the U.S. Capitol in Washington, D.C., U.S., on Tuesday, Oct. 20, 2015. Ryan is set to meet with a group of House conservatives Tuesday as he weighs a potential run to replace Speaker John Boehner under pressure from fellow Republicans. Photographer: Andrew Harrer/Bloomberg via Getty Images
Representative Paul Ryan, a Republican from Wisconsin and chairman of the House Ways and Means Committee, center, talks to the media after walking out of the U.S. Capitol building following a vote in Washington, D.C., U.S., on Friday, Oct. 9, 2015. Ryan is under heavy pressure from fellow Republicans to run for U.S. House speaker after a hard-line faction forced Speaker John Boehner to resign and his top lieutenant to drop out of the race. Photographer: Andrew Harrer/Bloomberg via Getty Images
UNITED STATES - OCTOBER 20 - Rep. Paul Ryan, R-Wis., speaks at a news conference following a House Republican meeting, on Capitol Hill in Washington, Tuesday, Oct. 20, 2015. Ryan is stating that he will run for speaker only if he receives enough GOP support by the end of the week. (Photo By Al Drago/CQ Roll Call)
US Speaker of the House Paul Ryan, Republican of Wisconsin, awaits the arrival of Israeli President Reuven Rivlin for a meeting at the US Capitol in Washington, DC, December 10, 2015. AFP PHOTO / SAUL LOEB / AFP / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
WASHINGTON, DC - DECEMBER 10: House Speaker Paul Ryan (R-WI) holds his weekly press briefing on Capitol Hill on December 10, 2015 in Washington, D.C. Paul Ryan spoke on topics including Donald Trump and the spending bill. (Photo by Allison Shelley/Getty Images)
WASHINGTON, DC - DECEMBER 15: Speaker of the House Paul Ryan, (R-WI) speaks during a Politico interview at the Grand Hyatt on December 15, 2015 in Washington DC. Ryan was interviewed by Politico's Chief White House Correspondent Mike Allen during a Politico Playbook Breakfast. (Photo by Mark Wilson/Getty Images)
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According to a statement from Ryan's camp, the Wisconsin lawmaker "will be all in" if the party can get behind him and gave them until Friday to decide.
In what was perhaps the quickest party response to Ryan's announcement, US Rep. Jason Chaffetz (R-Utah) — who had sought to counter House Majority Leader Kevin McCarthy's (R-California) candidacy for the speakership — dropped his bid for the position, saying "I'm out, and all in for Paul Ryan."
McCarthy ended his brief candidacy earlier this month.
Ryan had announced earlier that he would meet with members of a conservative faction of the House known as the Freedom Caucus, an indication that he is seriously mulling a run to replace House Speaker John Boehner (R-Ohio).
"He's always willing to talk with his colleagues," Ryan spokesman Brendan Buck told Business Insider.
Some of the more conservative members of the House Republican caucus, however, have already signaled their displeasure in Ryan as a choice to replace Boehner, with whom they often clashed. The House Freedom Caucus, comprised of more than 40 of those highly conservative members, has supported Rep. Daniel Webster (R-Florida) for speaker.
Ryan received something of a surprise endorsement from a key Democrat with whom he'd have to work often as a member of congressional leadership. US Senate Minority Leader Harry Reid (D-Nevada) said he was a "fan" of Ryan, even though he disagrees with him most of the time.
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Boehner is set to retire at the end of the month, but he has said he will stay on until his caucus picks his successor.
Meanwhile, Congress is running up against a slew of upcoming deadlines, including a November 3 cutoff point to raise the nation's debt limit and avoid a potential default.
RELATED: See the history of the House speaker in photos
House Speaker Timeline
Paul Ryan says he'd run for House speaker -- but there's a big catch
Frederick Augustus Conrad Muhlenberg, Frederick Augustus Conrad Muhlenberg (1750-1801) Served As A Member Of The Continental Congress And The First Speaker Of The House Of Representatives. (Photo By Encyclopaedia Britannica/UIG Via Getty Images)
Portrait of American politician and merchant Jonathan Trumbull (1710 - 1785), colonial governor of Connecticut, 1770s. (Photo by Stock Montage/Getty Images)
Engraving depicting Jonathan Dayton (1760-1824), American politician, USA, circa 1810. By Albert Rosenthal. (Photo by Kean Collection/Getty Images)
E2 NATHANIEL MACON Speaker of U.S. House of Representatives and U.S. Senator. Lived 1758-1837
UNITED STATES - CIRCA 1843: Portrait of Henry Clay; the Great Compromiser. (Photo by Buyenlarge/Getty Images)
Engraved portrait of United States Supreme Court Associate Justice Philip Pendleton Barbour (1783 - 1841) as he wears a coat, vest, and cravat, mid 19th Century. (Photo by Kean Collection/Getty Images)
circa 1850: John Bell (1797-1869), American politician. Member, US House of Representatives, 1827-1841; Speaker of the House, 1834-1835; US Secretary of War, 1841; US Senate, 1847-1859. Original Artwork: Engraved by A H Ritchie (Photo by Hulton Archive/Getty Images)
James K. Polk (1795-1849) 11th president of the United States. James Knox Polk served as the 17th Speaker of the House of Representatives and Governor of Tennessee. Polk was the surprise candidate for president in 1844, defeating Henry Clay of the rival Whig Party by promising to invade and annex Texas. (Photo by: Universal History Archive/UIG via Getty Images)
Engraved portrait of Robert Charles Winthrop, Speaker of the United States House of Representatives, with his signature, circa 1860. Engraved by A H Ritchie. (Photo by Archive Photos/Getty Images)
Howell Cobb, Howell Cobb (1815-1868), Southern Congressman Who Supported The Union And The Compromise Of 1850 Regarding Slavery In The United States. (Photo By Encyclopaedia Britannica/UIG Via Getty Images)
Full length portrait of Major General Nathaniel P. Banks (1816 - 1894), in full uniform, facing left, 1861. By Mathew Brady. (Photo by PhotoQuest/Getty Images)
circa 1865: James Lawrence Orr (1822-1873). American politician, South Carolina anti-secessionist in US Congress 1848-59, member, US Senate 1861, joined Confederacy, governor, South Carolina 1865-68, US ambassador to Russia 1872-73. (Photo by Hulton Archive/Getty Images)
Galusha A. Grow - Brady-Handy.
Photogravure portrait of American politician US Secretary of State James G. Blaine (1830 - 1893), 1884.
Michael C. Kerr - Brady-Handy.
circa 1870: Samuel Jackson Randall (1828-1890). American politician. Member, common council of Philadelphia, PA 1852-55, member, Pennsylvania state senate 1858-59, member, US House of Representatives 1863-90, serving as Speaker of the US House of Representatives 1876-81. (Photo by Hulton Archive/Getty Images)
Politician and major general during the Spanish-American War, Joseph Warren Keifer (1836 - 1932), circa 1885. (Photo by Kean Collection/Getty Images)
An engraved portrait of President Cleveland's Secretary of the Treasury John G Carlisle (1835-1910), circa 1880. (Photo by Kean Collection/Getty Images)
Thomas Brackett Reed, American politician, 1898. A Republican congressman from Maine, Reed twice served as Speaker of the House of Representatives, from 1889-1891 and again from 1895-1899. A print from Our Country in War and Relations with All Nations, by Murat Halstead, The United Subscription Book Publishers of America, 1898. (Photo by The Print Collector/Print Collector/Getty Images)
An engraved portrait of Republican leader Joseph Gurney Cannon (1836-1926), circa 1890s. (Photo by Kean Collection/Getty Images)
1905: Wedding portrait of Nicholas Longworth (left) and Alice Roosevelt posing with the bride's father, U.S. president Theodore Roosevelt. The bride is wearing a white dress, white gloves, a veil, and a train. (Photo by Hulton Archive/Getty Images)
Portrait of John William McCormack (1891 - 1980), the 53rd Speaker of the United States House of Representatives, 1963. Washington, D.C. (Photo by Bachrach/Getty Images)
circa 1985: American Democratic congressman from Massachusetts and Speaker of the House from 1976-1986, Thomas 'Tip' O'Neill, speaking and wearing a gray suit with a red tie. (Photo by Hulton Archive/Getty Images)
UNITED STATES - October 7: Speaker of the House John Boehner, R-Ohio, speaks during a news conference on Capitol Hill in Washington, Wednesday, October 7, 2015. (Photo By Al Drago/CQ Roll Call)