California: Proposition 4

Democratic presidential nominee Barack Obama leads Republican nominee John McCain by a large margin in California, and two of the most high-profile ballot measures are on the tipping point between passing and failing, according to a new survey released late Wednesday by the Public Policy Institute of California.

The ticket of Obama and Joe Biden leads McCain and Sarah Palin by a margin of 56-33 among likely voters, a 13-point gain for the Democratic ticket in the last month.