(Reuters) - U.S. Representative Martha Roby, an Alabama Republican who spurned Donald Trump in the 2016 presidential race, appeared headed for victory on Tuesday in a runoff election against a former Democrat-turned-Trump supporter.
Roby, a four-term incumbent in the House of Representatives, garnered 68 percent of the vote compared with 32 percent for challenger Bobby Bright in the race to choose the Republican nominee for Alabama's 2nd Congressional District, according to unofficial returns reported by the Associated Press.
The AP called the race for Roby within about 90 minutes of the polls closing.
US Representative Martha Roby
US Representative Martha Roby
UNITED STATES - JANUARY 20: Rep. Martha Roby, R-Ala., holds a news conference in the Capitol to announce the introduction of the 'Working Families Flexibility Act,' on Wednesday, Jan. 21, 2015. (Photo By Bill Clark/CQ Roll Call)
Photograph of Colonel Dave Zinn with Alabama congresswoman Martha Roby during a visit to Kandahar Airfield, Afghanistan, May 14, 2018. (Photo by Smith Collection/Gado/Getty Images)
UNITED STATES - JANUARY 20: Reps. Martha Roby, R-Ala., and Tom Rooney, R-Fla., arrive on the West Front of the Capitol before Donald J. Trump was sworn in as the 45th President of the United States, January 20, 2017. (Photo By Tom Williams/CQ Roll Call)
UNITED STATES - JUNE 28: Rep. Martha Roby, R-Ala., speaks during a news conference in the Capitol Visitor Center, June 28, 2016, to announce the Select Committee on Benghazi report on the 2012 attacks in Libya that killed four Americans. Rep. Mike Pompeo, R-Kan., also appears. (Photo By Tom Williams/CQ Roll Call)
UNITED STATES - OCTOBER 9: Rep. Martha Roby, R-Ala., looks for her ride as she on the House steps as she leaves the Capitol for the Columbus Day recess after final votes on Friday Oct. 9, 2015. (Photo By Bill Clark/CQ Roll Call)
UNITED STATES - JULY 30: Rep. Martha Roby, R-Ala., speaks during the House Republicans' news conference on 'Solutions to Empower Women At Work & At Home' on Wednesday, July 30, 2014. (Photo By Bill Clark/CQ Roll Call)
Congressman Mike Pompeo (R), R-Kansas, listens as Congresswoman Martha Roby, R-Alabama, questions Former Secretary of State and Democratic Presidential hopeful Hillary Clinton as she testifies before the House Select Committee on Benghazi on Capitol Hill in Washington, DC, October 22, 2015. AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
UNITED STATES - JULY 25: Rep. Martha Roby, R-Ala., arrives for the House Republican Conference meeting in the basement of the Capitol on Friday, July 25, 2014. (Photo By Bill Clark/CQ Roll Call)
UNITED STATES - JUNE 25: Rep. Martha Roby, R-Ala., gestures towards the Republican dugout during the 53rd Congressional Baseball Game in Nationals Park, June 25, 2014. The Democrats prevailed over the Republicans 15-6 in a rain shortened game. (Photo By Tom Williams/CQ Roll Call)
UNITED STATES - JUNE 18: Rep. Martha Roby, R-Ala., arrives for the House Republican Conference meeting in the basement of the Capitol on Wednesday, June 18, 2014. (Photo By Bill Clark/CQ Roll Call)
WASHINGTON, DC - JUNE 26: Representative Martha Roby (R-AL) hits a single during the annual Women's Congressional Softball game at at Watkins Recreational Center in Washington, DC on June 26, 2013. The annual game between Congressional members and the press is in benefit of the Young Survival Coalition.
(Photo by Maddie Meyer/The Washington Post via Getty Images)
UNITED STATES - JUNE 11: From left, Reps. Vicky Hartzler, R-Mo., Shelley Moore Capito, R-W.Va., Martha Roby, R-Ala., and Ileana Ross-Lehtinen, R-Fla., arrive for the photo-op for the House version of Seersucker Thursday on Wednesday, June 11, 2014. Congress' seersucker day was organized by Rep. Bill Cassidy, R-La. (Photo By Bill Clark/CQ Roll Call)
WASHINGTON, DC - FEBRUARY 13: Rep. Martha Roby (R-AL) delivers remarks during a news conference with fellow House Republicans at the Republican Party Headquarters on Capitol Hill February 13, 2013 in Washington, DC. The House Republican leaders squarely layed blame for the pending fiscal sequestration on President Barack Obama and said it was his and Senate Democrats who must avert the manditory spending cuts that will go into affect March 1. (Photo by Chip Somodevilla/Getty Images)
UNITED STATES - APRIL 25: Rep. Martha Roby, R-Ala., addresses the media during a news conference in the Capitol after a meeting of House Republican Conference. (Photo By Tom Williams/CQ Roll Call)
UNITED STATES ? SEPTEMBER 21: Rep. Martha Roby, R-Ala., leaves the House Republican Conference meeting in the Capitol on Wednesday, Sept. 21, 2011. (Photo By Bill Clark/Roll Call)
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Roby ran ahead of Bright in last month's five-way primary contest but failed to reach the 50 percent majority needed to clinch an outright victory, setting the stage for Tuesday's runoff.
The winner will be a heavy favorite against Democratic nominee Tabitha Isner in the Nov. 6 general election, when Democrats are hoping to pick up the 23 seats they need to claim a House majority.