New SurveyUSA poll out on the horse race in California showing Fred Thompson surging into a second place tie with John McCain, only 7 points behind Giuliani:

Republicans
Giuliani 28 (-6 vs. last poll May 4-6)
F. Thompson 21 (+10)
McCain 21 (nc)
Romney 11 (-1)
Gingrich 8 (-1)
Undecided 3 (-2)

Very little movement on the Democratic side in the last month according to SUSA:

Democrats
Clinton 46 (-2 vs. last poll May 4-6)
Obama 28 (+1)
Edwards 14 (-1)
Undecided 4 (+1)

For more polling data on the race in California, check the RCP Democratic primary page and the RCP Republican primary page..