The final push for California: Primary Election day is here - get out and vote!

LOS ANGELES, Calif. (FOX 11, CNS) - As of 4 p.m. today, a higher percentage of Los Angeles County registered voters had cast ballots in the presidential primary election than for the entire primary election day in 2012, according to the county registrar-recorder's office.

An estimated 25.78 percent of voters had cast ballots by 4 p.m., compared to a 21.87 percent voter four years ago, according to the office.

There were 4,799,548 registered voters in the county as of the end of May, according to the office.

During the presidential primary four years ago, about 21.87 percent of those eligible to vote did so. There were 4,450,035 registered voters in the county at the time of the 2012 presidential primary.

The polls opened today at 7 a.m. and will be open until 8 p.m.

Amid a report that she has already effectively won the nomination, Democratic presidential hopeful Hillary Clinton continued efforts today to lure California voters as the state's primary election looms, while her foe -- Vermont Sen. Bernie Sanders -- stumped in the Bay Area

Clinton began the day with a get-out-the-vote rally at La Fachada, Plaza Mexico, in Lynwood, where she continued to direct her political ire at presumptive Republican nominee Donald J. Trump. "We also believe that California represents the future, and it's a bright future, a positive future,'' she said. "I am tired of Donald Trump
insulting Americans. I am tired of Donald Trump talking down America.

"I am confident and optimistic about our future, but we're going to have to do some things -- like elect the right person to be president of the United States,'' she said.

The former first lady, U.S. senator and secretary of state also attended a get-out-the-vote rally at Leimert Park Village Plaza, then headed for a late-afternoon rally at Long Beach City College.

Tonight, Clinton spoke at a concert at the Greek Theatre in Los Angeles, with Stevie Wonder, John Legend, Andra Day, Ricky Martin and Christina Aguilera among those taking the stage. "California is going to help us make the future that we want for every person in this country and we're going to come out of the primary even stronger to take on Donald Trump,'' Clinton said.

As of today, Clinton officially needed 23 delegates to clinch her party's nomination -- a number she could easily achieve with a win Tuesday in New Jersey, before California polls even close.

Late today, however, The Associated Press reported that based on its count of pledged delegates and a survey of super delegates, Clinton already has commitments from the needed number of delegates to claim the nomination.

Sanders, however, is counting on a California win to keep his candidacy alive heading into next month's Democratic National Convention in Philadelphia. He said today his fate in California will likely hinge on voter turnout. If it's high, he will win, Sanders said, but if it's low, Clinton will likely take the state.

Sanders' last-day campaign stop today was an evening concert at San Francisco's Crissy Field, featuring recording artist Dave Matthews heading a list of performers and speakers, including actors Danny Glover and Shailene Woodley.

In Northern California today, Sanders also took shots at Trump, saying the Republican's campaign has been largely based on bigotry, and he again touted his grassroots support. "The energy and the grassroots activism in this campaign is with us, not Hillary Clinton,'' he said.

Trump made no Southern California appearances during the weekend or today even though he has said he could put staunchly Democratic California in play in the general election -- a claim about which some GOP strategists have expressed doubt.

The last Republican presidential candidate to carry California in a general election was George H.W. Bush in 1988.

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