Last Updated: November 7, 2018 3:35 p.m.

CONGRESSIONAL DISTRICT 49 NORTHERN SAN DIEGO

Precincts Reporting: 100%

Mike Levin, Dem - 54% (94,579)

Diane Harkey, GOP - 46% (82,095)

LOS ANGELES (AP) — Democrat Mike Levin captured the U.S. House seat held for years by retiring Republican Rep. Darrell Issa, a breakthrough victory Wednesday in a GOP-leaning stretch of Southern California where President Donald Trump's agenda was the dominant issue.

The victory carries symbolic weight because of Issa's nearly two-decade tenure, during which he was a chief antagonist of President Barack Obama. The 49th District is partly in the one-time GOP stronghold of Orange County. The rest is in San Diego County.

Levin, an environmental attorney, had about 54 percent of nearly 177,000 votes counted so far.

He sparred with Republican rival Diane Harkey over President Donald Trump's agenda, global warming and immigration. Harkey, a former state lawmaker, had been endorsed by the president.

"I don't think that the traditional Orange County Republican embraces Trumpism," Levin told The Associated Press. He said voters in the district are concerned with coastal protection and climate change.

With Levin's victory Democrats will hold at least a 40-13 advantage in California's congressional delegation.