DeMaio, one of two openly gay Republicans who has received help from the national party, now has more than $1 million cash on hand heading into the election year.
DeMaio is running in a swing district he carried during his unsuccessful run for mayor of San Diego in 2012, and strategists expect a close — and expensive — race between him and Peters. Peters has yet to release his fourth-quarter fundraising numbers.
His campaign has drawn praise from a number of GOP leaders, and he's gotten fundraising support from GOP leaders, including House Majority Whip Kevin McCarthy (R-Calif.).
But there have been grumblings from some other more socially conservative Republicans over the party backing DeMaio. Rep. Randy Forbes (R-Va.) has fought against the National Republican Congressional Committee using resources to back DeMaio and other gay candidates.
DeMaio fired back against Forbes last month in an interview with The Hill. "Unlike Mr. Forbes, San Diegans aren’t focused on sexual orientation," he said.