|Levin Mike Levin||Democrat Dem.||166,453||56.4%|
|Harkey Diane Harkey||Republican Rep.||128,577||43.6%|
295,030 votes, 100% reporting (542 of 542 precincts)
When the conservative Republican incumbent, Representative Darrell Issa, announced in January that he would retire, he put the district that had elected him since 2000 into play. Mike Levin, a Democrat and a lawyer involved in environmental issues, appears to have an edge over Diane Harkey, a Republican former state lawmaker.