The 2020 United States presidential election in California was held on Tuesday, November 3, 2020, as part of the 2020 United States presidential election in which all 50 states plus the District of Columbia participated. California voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican Party's nominee, incumbent President Donald Trump, and running mate Vice President Mike Pence against Democratic Party nominee, former Vice President Joe Biden, and his running mate Kamala Harris, the junior senator from California. California had, in the 2020 election 55 electoral votes in the Electoral College, the most of any state. California was one of six states where Trump received more percentage of the two-party vote than he did in 2016. This election also marked the first time since 2004 that the Republican candidate won more than one million votes in Los Angeles County, due to increased turnout statewide.

The 1936 United States presidential election in California was held on November 3, 1936, as part of the 1936 United States presidential election. State voters chose twenty-two electors, or representatives to the Electoral College, who voted for president and vice president.