Warren ahead in the poll in California amid a wave of polls

Senator Elizabeth Warren, D-Mass., Received more positive news in a poll Wednesday as she climbed to the top spot in the latest survey of the University of California at Berkeley, conducted by the California Institute of Government Studies, for the Los Angeles Times.

The poll showed that Warren had a 9-point lead over former Vice President Joe Biden and 10 points over Senator Bernie Sanders, I-Vt. Warren got the support of 29 percent of Democratic primary voters, Biden being the top 20 percent choice and Sanders 19 percent, the newspaper reported. Senator Kamala Harris, D-Calif., Gained support from 8% of Democratic primary voters in her home country.

"We seem to be at an inflection point of the Democratic presidential campaign," said Mark DiCamillo, the returning officer. "The changing voting preferences of California Democrats could be a harbinger of things to come from elsewhere in the country."

California, which moved its primary until March 3 for the 2020 cycle, presents a treasure trove of delegates – the best of any state. The UC Berkeley poll polled 4,527 registered voters across the state, including 2,272 voters deemed likely to vote in the Democratic primary and had a margin of error of 3 percentage points.

This poll comes amidst other investigations that revealed that Warren was at the top of the rankings. A survey of the Des Moines Register on Saturday showed him that even with Biden, with a two-point advantage in Iowa, which was within the poll's error margin. Hampshire, also in margin error.

Elsewhere on Wednesday, a survey by Quinnipiac University revealed that Warren was leading the pack with a two-point advantage over Biden at the national level, which is also within the error margin of this poll. Warren was the first choice of 27% of Democrat voters and independents with democratic tendencies, while Biden got support of 25% and Sanders 16%. While Biden saw much of his support coming from older voters and Sanders among the youngest, Warren's support was about equal for all age groups.

This survey marked the first time that a candidate other than Biden had been running the Quinnipiac survey since he began asking voters for their preferences in March. Quinnipiac polled 561 Democratic voters and independent Democrats with a margin of error of 4.9 percentage points.