Harley Rouda is running against Dana Rohrabacher in CA 48. Even though California has a top-two primary system in which candidates can draw in votes from independents and all parties, Rouda's spring strategy was to motivate Democrats. In this ad, he featured Barack Obama, attacked the GOP's "Washington extremists," and toured liberal positions on guns and Planned Parenthood.
In the general election, however, he is downplaying party and instead focusing on his record as a businessman. His tagline is "Common Sense for Common Ground."