"In the razor-thin 1960 presidential election, John F. Kennedy campaigned in 49 states. Richard M. Nixon visited all 50.Since California (and Alabama, Georgia, Mississippi, and Texas) are locked up (the winner takes all electoral college votes in each), neither Obama nor Romney have reason to campaign there.
"The current contest is just as close and intense, but the candidates have campaigned in only 10 states since the political conventions. There are towns in Ohio that have received more attention than the entire West Coast."
In a he/she-who-garners-the-most-votes-nationwide-wins kinda contest, you'd bet they'd be out there pushing for every vote they can get.
(And the good people of Los Angeles would have to endure non-stop TV advertising.)
* Yeah, it means Crazy Al would have been president in 2005. But it is what it is.