Republicans aim to expand slim House majority as final races near finish line

Republicans are pushing to expand their slim majority in the House of Representatives as the final handful of undecided races near their conclusion.

As of Sunday morning, Begich holds a nearly 3-point lead at 48.7% of the vote compared to Peltola's 46.1%. The vote count sits at 155,120 to 146,782 with roughly 98% of the vote counted.

Republican Rep. John Duarte is leading former Democratic state assembly member Adam Gray in California's 13th Congressional District, but the highly contested race remains uncalled as of Sunday morning.

Roughly 86% of the vote has been counted, and Duarte holds a 50.6% to 49.4% lead. The pair is separated by just over 2,000 votes.

Democratic challenger Derek Tran has taken the lead over Republican incumbent Rep. Michelle Steel in the 45th District. Steel had been in the lead by a few hundred votes late last week, but Tran now has a razor-thin 36-vote lead.

Roughly 94% of the vote has been counted for the district.

Republican incumbent Rep. Mariannet Miller-Meeks holds a less than 1% lead over challenger Christina Bohannan with 99% of the vote counted. Miller-Meeks' lead sits at just under 1,000 votes.

Bohannan has requested a recount in her bid to unseat Miller-Meeks. The Associated Press has not yet called the race because the margin was close enough that it could prompt a recount. Miller-Meeks has declared victory and said she was confident in her lead.

Democratic incumbent Marcy Kaptur leads her Republican challenger, Derek Merrin, by less than 1 point with 99% of the votes counted. Kaptur's lead sits at just over 1,000 votes as of Sunday morning.

Races with a margin of 0.5% or less trigger an automatic recount in Ohio.

Fox News' Chris Pandolfo and Jasmine Baehr and the Associated Press contributed to this report.