Sure. Here is the link:
http://news.berkeley.edu/2015/09/04/igs-poll-californians-oppose-sanctuary-city-flexibility/
From the article:
The online survey, which polled 1,098 California residents from Aug. 11-26, found that 74 percent of respondents said local authorities should not be able to ignore a federal request to hold a detained person who is in the country illegally. Only 26 percent of respondents said local authorities should have that right.
Opposition to the sanctuary city policies crossed the political spectrum, and included 73 percent of Democrats, 82 percent of Republicans and 71 percent of independents.
thank you!