California Governor Gavin Newsom signed a new law on May 28, 2026 that expands the state’s ability to protect elections from federal interference. The legislation, which was approved by the state legislature earlier in the month, adds criminal penalties—including possible prison terms—for individuals who attempt to influence California elections from outside the state. In a statement released after the signing, Newsom said the law could mean prison for former President Donald Trump and others who question California’s election process.

The new law follows a long history of California election reforms. The state has the largest electorate in the country and uses a top‑two primary system that has been in place for 15 years. California also allows mail voting for all elections, a practice that has been expanded during the COVID‑19 pandemic. Because of these features, California officials say the state is a frequent target of claims of fraud and interference. The law is intended to deter attempts by federal officials or other actors to undermine the integrity of California ballots.

According to the Associated Press, the bill was signed by Newsom on Wednesday, May 28, 2026, after a vote in the state Senate and Assembly. The legislation was drafted in response to statements by the Trump administration that it would try to “interfere” in the 2026 midterm elections. Newsom said in a statement that he expected the Trump administration to try to meddle in California elections and that the new law would provide a deterrent. He also said that the law could result in prison for Trump and others who question the state’s election process.

The law’s key provision is a criminal penalty for any person who, “with the intent to influence the outcome of an election in California, engages in any act that interferes with the election process.” The penalty can include up to five years in prison and a fine of up to $250,000. The law also requires the state to notify federal authorities if it believes a federal official is attempting to interfere. The legislation was supported by most Democrats in the legislature, while Republican lawmakers expressed concerns about potential overreach.

California officials have said that the law is a response to the Trump administration’s repeated claims of widespread voter fraud. The state’s Secretary of State office has issued statements explaining the counting process for mail ballots and the reasons for the long counting period. The law is part of a broader trend of states adopting measures to protect elections from external influence. The legislation was covered by national outlets such as The Guardian, ABC7, and the AP.

The law is still subject to legal review. Opponents argue that it could be challenged on constitutional grounds, and that it may conflict with federal election laws. Supporters say that the law is necessary to protect California’s elections from interference and to maintain public confidence in the electoral process. The California Supreme Court has not yet ruled on the law, and no federal court has yet issued a ruling.

The new law comes as the 2026 midterm elections approach. California voters will elect all of the state’s seats in the U.S. House of Representatives, the state Assembly, and the state Senate, as well as the governor and other statewide offices. The law is intended to ensure that the state’s elections are conducted fairly and that any attempts to influence them from outside the state are deterred. The law’s effectiveness will be tested as the election cycle progresses and as the Trump administration’s actions are monitored by California election officials.

Legal experts say the law may face challenges under the First Amendment, but supporters argue it is a necessary safeguard. The law’s impact will become clearer after the midterm elections.