I doubt that California is ever going to end up with two Republicans in a Senate race. Maybe a different down ballot race that won't get as much attention, but it would be a stretch for that to happen for a Senate race. Not only would the Democratic vote have to be very evenly fractured among many different candidates, but two Republicans would have to consolidate enough support to overtake every Democrat. It's hard to see two Republicans getting that much of the vote in a primary, and I doubt there wouldn't be at least one Democrat who would stand out from the crowd enough to at least get more than one of the Republicans. It's about as likely as a run-off between two Democrats occurring in Louisiana (for a Senate race).
So this doesn't sound likely to you?:
Kevin Faulconer: 25%
Jeff Denham: 17%
Linda Sanchez: 15%
Fabian Nunez: 14%
Eric Garcetti: 11%
Hilda Solis: 10%
Others: 8%
I really don't get how this can sound so complicated to people.