The Associated Press declared Ken Calvert the winner over fellow Republican Young Kim in California’s newly redrawn 40th Congressional District on Monday evening, November 9; CBS News also projected a Calvert victory. The call puts Kim on course to lose her House seat, though the reports did not say whether the result had been certified.

A new map brought the incumbents together

Calvert and Kim, both sitting Republicans, were drawn into the same district after California voters approved Proposition 50. The measure shifted five congressional districts to favor Democrats, and the new boundaries made the two incumbents rivals for one seat.

The 40th District covers parts of Orange and Riverside counties, stretching from Mission Viejo to communities including Woodcrest, Menifee and Murrieta. Republicans made up less than 40% of registered voters there; Democrats accounted for about 31%, and voters with no party preference for 21%.

The candidates entered the contest with different amounts of their former constituencies inside the new boundaries. Calvert retained about half of his previous constituents, compared with about a third for Kim.

Experience and money shaped the contest

Calvert was first elected to Congress in 1992 and is the longest-serving Republican in California’s congressional delegation. He is a senior member of the House Appropriations Committee and chairs its Defense Appropriations Subcommittee.

Kim raised more money: $10 million, compared with Calvert’s $7 million. In the primary, Calvert received nearly 35% of the vote and Kim just under 21%, according to CBS News.

Americans 4 Security PAC spent more than $6 million to support Calvert’s re-election campaign. The group sent fliers to Democratic voters linking Kim with President Donald Trump, aiming to discourage them from supporting her—even though both candidates backed Trump.

Campaign attacks focused on Trump and China

The candidates also clashed directly. Kim demanded an apology over a Calvert campaign ad that accused her of being compromised by the Chinese Communist Party. Calvert, meanwhile, criticized Kim over what he described as her wavering support for Trump.

Calvert had declared victory on the Thursday after the November 3 election, saying the outcome was clear while officials were still counting ballots. Kim had not conceded in the account published by the Associated Press. Neither report provided the final vote totals or the margin.