It was not a prize that most campaigns were organizing for, given how blue the state is electorally (Romney is not taking part in straw polls this year, as part of his campaign's way around the Ames event last month). The state's main draw for Republicans is as a campaign ATM.
Paul's supporters have tended to be organized around straw polls - he won the CPAC version again this year, for instance. A pro-Rick Perry super PAC, Americans for Rick Perry, has a main consultant who is based out of California, but it wasn't immediately clear whether they put any measurable effort behind this event.
Nonetheless, here are the numbers:
Congressman Ron Paul (374, 44.9%)
Governor Rick Perry (244, 29.3%)?
Mitt Romney (74, 8.8%)
Congresswoman Michele Bachmann (64, 7.7%)
Jon Huntsman (17, 2.0%)
Herman Cain (15, 1.8%)
Newt Gingrich (14, 1.7%)
Thad McCotter (7, 0.8%)
Rick Santorum (7, 0.8%)
Gary Johnson (2, 0.2%)
Fred Karger (1, 0.1%)
Write-ins (15, 1.8%)