How would they know which Republicans to deny and which to allow?
They check out their yard signs and bumper stickers.
I asked the same question yesterday and received this torturous answer: "It was assumed based on polling data that White registered Republican voters in the Southern California area would vote Romney; Hispanic and other minority Republican voters would vote McCain. It would appear that the change in party affiliation that led to many Republicans not casting their votes were NOT, shall we say, Spanish sur-named."
I spent this morning buying all the stock I could afford in both ALCOA and Reynolds tin foil wrap companies.
The demographics (location esp.) of the two wings of the California GOP are well known. Orange County is conservative, e.g., and the central to north coast is liberal. The next question would be, "Did the liberal GOP areas have the same complaint?" I have not yet heard so.