Former NY Mayor Bloomberg to forgo 2020 White House bid, will focus on climate change

March 5 (Reuters) - Former New York City Mayor Michael Bloomberg will not seek the Democratic nomination for U.S. president in 2020 but will instead launch an effort aimed at combating climate change, he said on Tuesday.

A billionaire who could have sunk millions of his own dollars into a campaign, Bloomberg had publicly toyed with running and has become a vocal critic of Republican President Donald Trump. He spent millions of dollars last year helping Democrats retake control of the U.S. House of Representatives in congressional elections and has invested in advocating for sweeping gun-control laws.

Bloomberg, 77, made his 2020 announcement in an opinion piece on the site of Bloomberg News, the company he runs.

He said he was mindful of the difficulty of prevailing in the Democratic Party nominating primary process, especially given the leftward turn the party has taken in recent years.

"I believe I would defeat Donald Trump in a general election," Bloomberg wrote. "But I am clear-eyed about the difficulty of winning the Democratic nomination in such a crowded field."

A former Republican and independent, Bloomberg would have run as a more moderate candidate among the progressives who currently dominate the 12-member field, which so far largely consists of sitting U.S. senators.

"Many people have urged me to run," he wrote. "Some have told me that to win the Democratic nomination, I would need to change my views to match the polls."

Any path to the nomination for Bloomberg would have been complicated by the entry of former Vice President Joe Biden, another moderate, into the race. Biden has said he will decide soon whether to mount a run.

Other possible candidates such as U.S. Senator Sherrod Brown of Ohio, Montana Governor Steve Bullock and former U.S. Representative Beto O'Rourke of Texas are also considering jumping in.

18 PHOTOS
Candidates who have announced 2020 presidential bids
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Candidates who have announced 2020 presidential bids

Sen. Elizabeth Warren (D-Massachusetts)

(Photo by Scott Eisen/Getty Images) 

Julian Castro, former Mayor of San Antonio and a former secretary of Housing and Urban Development

(REUTERS/Brian Snyder)

Sen. Kamala Harris (D-California)

(AP Photo/Manuel Balce Ceneta)

John Delaney, former Maryland congressman

(AP Photo/Nick Wass, File)

Sen. Kirsten Gillibrand (D-New York)

(AP Photo/Mary Altaffer)

Richard Ojeda, former West Virginia senator and military veteran

(MICHAEL MATHES/AFP/Getty Images)

Rep. Tulsi Gabbard (D-Hawaii)

(AP Photo/Marco Garcia)

Andrew Yang, founder of Venture for America

(Daniel Acker/Bloomberg via Getty Images)

Pete Buttigeig, Mayor of South Bend, Indiana

(Photo by Alex Wong/Getty Images)

Howard Schultz, Former Starbucks CEO

(Photo by Elaine Thompson/AP)

Sen. Bernie Sanders (I-Vermont)

(Photo by: Andrew Harnik/Associated Press)

Former Massachusetts Gov. Bill Weld (R)

(Photo by Paul Marotta/Getty Images)

Sen. Cory Booker (D-New Jersey)

(Photo by Ethan Miller/Getty Images)

Former Colorado Governor John Hickenlooper (D)

(Photo by Joe Amon/The Denver Post via Getty Images)

Sen. Amy Klobuchar (D-Minnesota)

(Photo by Mark Wilson/Getty Images)

LONDONDERRY, NH - APRIL 19: Democratic Presidential candidate, South Bend Mayor Pete Buttigieg attends a campaign stop at Stonyfield Farms on April 19, 2019 in Londonderry, New Hampshire. Recent polls are showing Buttigieg is gaining ground with Democrats in the presidential nominating states of Iowa and New Hampshire. (Photo by Scott Eisen/Getty Images)
SOMERSWORTH, NH - APRIL 19: Democratic Presidential Beto O'Rourke speaks during a campaign stop at a cafe on April 19, 2019 in Somersworth, New Hampshire. The 2020 Democratic Presidential hopeful met supporters and answered various questions. (Photo by Scott Eisen/Getty Images)
UNITED STATES - NOVEMBER 15: Rep. Seth Moulton, D-Mass., arrives for the House Democrats' caucus meeting in the Capitol on Thursday, Nov. 15, 2018. (Photo By Bill Clark/CQ Roll Call)
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CLIMATE PUSH

Rather than running, Bloomberg said he would use his massive personal fortune - estimated at more than $50 billion - to launch a new climate change push, Beyond Carbon, with the goal of moving the nation away from fossil fuels and toward clean energy sources.

Bloomberg already backs another effort, Beyond Coal, dedicated to shutting down coal-fired power plants. In 2014, the United Nations appointed him the first special envoy for cities and climate change to work with cities globally to combat global warming.

He has ripped Trump as a “climate denier” for pulling the United States out of the Paris climate agreement.

"I’ve come to realize that I’m less interested in talking than doing," Bloomberg wrote. "And I have concluded that, for now, the best way for me to help our country is by rolling up my sleeves and continuing to get work done."

Bloomberg also founded Everytown for Gun Safety, the nonprofit advocacy group originally known as Mayors Against Illegal Guns, which has focused on requiring universal background checks for firearms purchases.

The group has backed candidates for office who support universal checks and argued against those who oppose them, as well as supporting state-level gun-control initiatives.

28 PHOTOS
Michael Bloomberg through the years
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Michael Bloomberg through the years
344913 02: Bloomberg L.P. founder and CEO Michael Bloomberg poses for a portrait November 2, 1998 in the training room at his offices in New York City. (Photo by Chris Casaburi/Getty Images)
UNITED STATES - CIRCA 2000: Republican mayoral candidate Michael Bloomberg samples a slice of life at Francesco's Pizzeria on Third Ave. in Bay Ridge, Brooklyn. (Photo by Linda Rosier/NY Daily News Archive via Getty Images)
UNITED STATES - CIRCA 2000: Republican mayoral candidate Michael Bloomberg talks to passersby while campaigning at Broadway and W. 225th St. (Photo by David Handschuh/NY Daily News Archive via Getty Images)
UNITED STATES - CIRCA 2001: Republican mayoral candidate Michael Bloomberg exchanges high-fives with 7-year-old Matthew DePoalo while campaigning on Ditmars Blvd. in Astoria. (Photo by Andrew Savulich/NY Daily News Archive via Getty Images)
388464 18: Michael Bloomberg of Bloomberg News Service hosts a party before attending the annual White House Correspondents Dinner, April 28, 2001 in Washington DC. (Photo by Mark Wilson/Newsmakers)
NEW YORK, UNITED STATES: Michael Bloomberg, Republican candidate for New York mayor, speaks to the press in Brooklyn, New York, 26 September 2001. Bloomberg handsomely won the 25 September New York mayoral primary election to be the official Republican party candidate to replace New York Mayor Rudy Giuliani on January 1 next year, according to exit polls. AFP PHOTO Doug KANTER (Photo credit should read DOUG KANTER/AFP/Getty Images)
UNITED STATES - OCTOBER 26: Republican mayoral candidate Michael Bloomberg meets with the Daily News editorial board. (Photo by Pat Carroll/NY Daily News Archive via Getty Images)
Mayoral candidate Michael Bloomberg leaves the polling booth at PS 6 in Manhattan, NY. (Photo by Jennifer S. Altman/WireImage)
399131 02: Michael Bloomberg, the108th Mayor of the City of New York, gives his inaugural address January 1, 2002 at City Hall in New York City. (Photo by Getty Images)
UNITED STATES - CIRCA 2002: Mayor Michael Bloomberg chats with diners at the International House of Pancakes at 135th St. and Adam Clayton Powell Blvd. in Harlem, where he picked up the endorsement of the Rev. Calvin Butts. (Photo by Craig Warga/NY Daily News Archive via Getty Images)
NEW YORK, UNITED STATES: New York City Mayor Michael Bloomberg (C), and former New York Stock Exchange President William Johnston (R) listens to New York Stock Exchange Chairman Richard Grasso (R) on the bell podium before Bloomberg rang the opening bell to begin trading 02 January, 2002. AFP PHOTO Henny Ray ABRAMS (Photo credit should read HENNY RAY ABRAMS/AFP/Getty Images)
399944 03: New York Mayor Michael Bloomberg speaks at the swearing in of over 300 probationary firefighters January 22, 2002 at the Fire Academy on Randalls Island in New York City. The new class is the second to enter the academy since the World Trade Center attack, when the department lost 343 firefighters. The probationary firefighters will begin physical training and classroom instruction before being sent out to firehouses around the city., (Photo by Spencer Platt/Getty Images)
UNITED STATES - JANUARY 30: Mayor Michael Bloomberg makes his first State of the City address in the City Council chamber at City Hall. (Photo by Linda Rosier/NY Daily News Archive via Getty Images)
Mayor Michael Bloomberg cuts the ribbon to begin the opening of fall's Fashion Week in Bryant Park in Manhattan, NY. (Photo by Jennifer S. Altman/WireImage)
UNITED STATES - FEBRUARY 09: Mayor Michael Bloomberg stands amidst fire officials during funeral of Fire Lt. Kevin Pfeifer at St. Margaret's Church in Middle Village, Queens. Pfeifer, 42, who worked with Engine Co. 33 in lower Manhattan, was killed in the Sept. 11 terrorist attack on the World Trade Center. Bloomberg, attending his first firefighter funeral since taking office last month, eulogized the fallen hero and praised the bravery of all the firefighters who responded to the attacks. (Photo by Mike Albans/NY Daily News Archive via Getty Images)
401921 01: New York City Mayor Michael Bloomberg speaks at the unveiling of a fifty-foot high stainless steel tree by artist Roxy Paine March 5, 2002 in New York City's Central Park. The tree is one of five public artworks on display in Central Park sponsored by the Whitney Museum of American Art. (Photo by Mario Tama/Getty Images)
NEW YORK, UNITED STATES: New York Mayor Michael Bloomberg(L) and Attorney General John Ashcroft (R) look at memorial banners and posters in front of St. Paul's Chapel 09 April 2002 in New York City, before visiting ground zero at the site of the World Trade Center attacks. AFP PHOTO/POOL/Kathy WILLENS (Photo credit should read KATHY WILLENS/AFP/Getty Images)
403191 02: New York City Mayor Michael Bloomberg (C) and Fire Commissioner Nicholas Scoppetta (R) look on as a U.S. flag that once flew over Ground Zero is raised during a ceremony at City Hall Plaza April 1, 2002 in New York City. The flag was immortalized in a photograph by Thomas Franklin of three firefighters raising it amid the rubble of the World Trade Center after the September 11, 2001 terrorist attack on New York City. (Photo by Mario Tama/Getty Images)
UNITED STATES - MAY 28: Mayor Michael Bloomberg addresses the Republican State Convention at the Sheraton New York Hotel on Seventh Ave. (Photo by Andrew Savulich/NY Daily News Archive via Getty Images)
NEW YORK - JUNE 14: National Aeronautics and Space Administration (NASA) astronauts Dominic Gorie (L) and Frank Culbertson (R) present an American flag to New York City Mayor Michael Bloomberg (C) in honor of Flag Day June 14, 2002 in New York City. The flag was found at Ground Zero, the location of the World Trade Center in New York, and was flown into space in December 2001 aboard the NASA Space Shuttle Endeavor. Culbertson was onboard the International Space Station September 11, 2001 when the terrorist attacks occurred in the U.S. (Photo by Mario Tama/Getty Images)
NEW YORK - JULY 4: New York City Mayor Michael Bloomberg gets a Nathan's Famous hot dog after Takeru Kobayashi won Nathan's Famous Fourth of July Hot Dog Eating Contest at Coney Island July 4, 2002 in the Brooklyn borough of New York City. Kobayashi, who won last year, set a new world record by eating 50 1/2 hot dogs in twelve minutes. (Photo by Mario Tama/Getty Images)
NEW YORK, NY - MAY 10: New York City Mayor Michael Bloomberg (2nd R) speaks with an aide while announcing a new emergency notification system at a news conference overlooking Ground Zero on May 10, 2011 in New York City. Bloomberg, who was joined by politicians, federal officials and the heads of mobile phone companies, spoke of the system that will alert what to do in case of emergency to anyone with an 'enabled' mobile device within range of a cell phone tower. Part of a law passed by Congress five years ago, the service is scheduled to be available in New York City and Washington, D.C. by the end of the year and is expected in the rest of the country by mid-2012. (Photo by Spencer Platt/Getty Images)
NEW YORK, NY - SEPTEMBER 07: New York Mayor Michael Bloomberg (R) speaks at a press conference as construction continues at the World Trade Center site on September 7, 2011 in New York City. The National September 11 Memorial & Museum will feature two reflecting pools on the footprints of the twin towers. The memorial is scheduled to be dedicated on September 11, 2011, the tenth anniversary of the World Trade Center terrorist attacks. (Photo by Mario Tama/Getty Images)
WASHINGTON, DC - MARCH 02: (L-R) Los Angeles Mayor Antonio Villaraigosa, New York Mayor Michael Bloomberg and Chicago Mayor Rahm Emanuel participate in a forum about education in big cities at the Katzen Arts Center on the campus of American University March 2, 2012 in Washington, DC. Calling their municipalities 'city-states,' the mayors suppored the idea of individual school districts being able to compete with states for the $4.35 billion 'Race to the Top' grant program created by President Barack Obama. (Photo by Chip Somodevilla/Getty Images)
NEW YORK, NY - OCTOBER 31: New York City Mayor Michael Bloomberg (C) rings the opening bell of the New York Stock Exchange on the first day of opening since Hurricane Sandy October 31, 2012 in New York City. The storm has claimed several dozen lives in the United States and has caused massive flooding across much of the Atlantic seaboard. U.S. President Barack Obama has declared the situation a 'major disaster' for large areas of the U.S. east coast, including New York City, with widespread power outages and significant flooding in parts of lower Manhattan and elsewhere. (Photo by Allison Joyce/Getty Images)
NEW YORK, NY - MARCH 12: New York City Mayor Michael Bloomberg holds a large cup as he speaks to the media about the health impacts of sugar at Lucky's restaurant, which voluntarily adopted the large sugary drink ban, March 12, 2013 in New York City. A state judge on Monday blocked Bloomberg's ban on oversized sugary drinks but the Mayor plans to appeal the decision. (Photo by Allison Joyce/Getty Images)
NEW YORK, NY - NOVEMBER 06: New York City Mayor-elect Bill de Blasio speaks with outgoing Mayor Michael Bloomberg at City Hall on November 6, 2013 in New York City. It was the first meeting between the two since de Blasio's election victory the day before. (Photo by John Moore/Getty Images)
NEW YORK, NY - AUGUST 19: New York City Mayor Michael Bloomberg speaks at a press conference with United States Secretary for Housing and Urban Development Shaun Donovan (not seen), unveiling a Hurricane Sandy Recovery Report on August 19, 2013 in the Greenpoint neighborhood of the Brooklyn Borough of New York City. The report calls for strengthening the region's electrical grid, reinforcing coastline and protecting gas supplies. (Photo by Andrew Burton/Getty Images)
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(Reporting by James Oliphant and Ginger Gibson; Editing by Chris Reese and Peter Cooney)

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