(CNN) - Republican presidential candidates Mitt Romney and Rick Perry are tied among California Republican voters, but President Barack Obama still beats the GOP hopefuls in head-to-head match-ups, according to a new survey.
The USC Dornsife/Los Angeles Times Poll released Sunday night showed the former Massachusetts governor and current Texas governor each with 22 percent support in the battle for the GOP presidential nomination, followed by Rep. Ron Paul of Texas with 11 percent, Rep. Michele Bachmann of Minnesota with ten percent and former House Speaker Newt Gingrich with six percent.
Among self-identified tea party supporters in the Golden State, Perry led Romney by ten percentage points, 33 to 23. Bachmann received 11 percent support from the voting bloc.
National surveys released in the past few weeks showed Romney, Perry and Bachmann in the top spots.
In hypothetical 2012 match-ups, Obama led Romney by 19 points, Perry by 24 points and Bachmann by 26 points in California. His approval rating in the state was 50 percent, down from 60 percent a year after the 2008 election, when he won the typically blue state with 61 percent of the vote.
However, his approval rating among women and nonpartisan voters remained high at 55 percent and among Latino voters at 59 percent.
The USC Dornsife/Los Angeles Times Poll interviewed 1,508 registered voters in California from August 17 through August 28 with a sampling error of plus or minus 2.52 percentage points.
– CNN Deputy Political Director Paul Steinhauser contributed to this report.