Size of slim Republican House majority hangs on 3 uncalled races

The three House races that remain uncalled as of Monday are in California and Iowa. 

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 Monday morning.

More than 97% of the vote has been counted, and Duarte holds a slim 50.05% to 49.95% lead. The two candidates are separated by just 351 votes at 102,550 to 102,346.

Democratic challenger Derek Tran is holding his lead over Republican incumbent Rep. Michelle Steel in the 45th District. Tran is now up 545 votes with a total of 157,427 to Steel's 156,882 votes as of Monday morning.

99% of the votes have been counted for the district. 

Republican incumbent Rep. Mariannette Miller-Meeks holds a .1% lead over challenger Christina Bohannan with 99% of the votes counted. Miller-Meeks' lead sits at 800 votes as of Monday.

A recount, which Miller-Meeks has labeled a waste of taxpayer money, is underway, and House Administration Committee election observers have been deployed to the state to observe the process.

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.

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