Update 10:26 p.m.: Initial election results in California's competitive 31st District have Republican Congressman Gary Miller leading State Senator Bob Dutton by a 10 percent margin.
The Republican v. Republican battle has been in the limelight for months, emerging as the nexus for redistricting, unabated super PAC spending, and a primary system overhaul in the state.
Click here for our piece on the 31st District, an area that includes the cities of San Bernardino and Rancho Cucamonga.
Real-time results for California's Congressional races can be seen here.
Proposition Cheat Sheets
* June 5 Primary Results *
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