LOS ANGELES, CA — Voting in the presidential primary officially begins Monday, and, if the polls are to be believed, Sen. Bernie Sanders is on a hot streak while President Donald Trump appears poised for a shellacking in the November election regardless of which top candidate emerges from the Democratic primary.

While Iowa will be the first state to caucus this week, the Golden State will open up early voting later this month to make it easier than ever for Californians to participate in the March 3 primary. Two polls released this week show Sanders opening up a sizable lead over former Vice President Joe Biden and Sen. Elizabeth Warren in California. A UC Berkeley Institute of Governmental Studies poll of likely California voters released last week has Sanders on top with 26 percent of the vote, followed by Warren at 20 percent and Biden at 15 percent. According to the poll, Warren has been slipping in recent weeks with some of her supporters apparently defecting to the Sanders camp. A Change Research poll released last week gives Sanders a near insurmountable lead in California with 30 percent of the vote to Warren's 16 and Biden's 15.

But March 3 is still a long way off, and the candidates' performances in early voting states such as Iowa, New Hampshire and Nevada can go far in determining their fates. Most major national polls still have Biden and Sanders jockeying for the nationwide lead, however.

Days before the Iowa caucuses, a national USC Dornsife/LA Times poll Friday showed former Vice President Joe Biden retaining the Democratic primary lead, ahead of Sens. Bernie Sanders, Independent- Vermont, and Elizabeth Warren, Democrat-Massachusetts, by a nearly 2 to 1 margin. Results from the first poll of 2020 reflect some important changes in the primary contest, including the late entrance of former New York City Mayor Michael Bloomberg. The results show Biden retaining a strong lead among the Democratic primary candidates, said Robert Shrum, director of the Center for the Political Future at the USC Dornsife College of Letters, Arts and Sciences.

"These numbers show Joe Biden's continuing strength and if he wins in Iowa, he has a pretty good path to the nomination," said Shrum. "But if Biden performs poorly in the Iowa caucuses and the New Hampshire primary, it remains to be seen if this support is a firewall against early losses."

Poll participants were asked who they would vote for if various Democratic party candidates were running against Trump in the general election. In each of the head-to-head matchups, Trump topped out at 41% support from those planning to vote or who leaned toward voting in the general election.

In a Trump-Biden contest, 49% said they would vote for Biden and 40% said they would vote for Trump. In a matchup with Sanders, Sanders drew 47% support while Trump received 40%. Paired with Warren, 45% said they'd vote for Warren, versus 41% for Trump. "It's significant that Trump is only at about 40% of support against any of the Democrats we tested and against Joe Biden. Trump is in landslide loss territory," said Shrum.