Guy Marzarotti

In a statement, he called the allegations false.

But some of his top supporters, including California Senator Adam Schiff and Congressman Jimmy Gomez, are dropping their endorsements and calling on Swalwell to end his campaign.

For NPR News, I'm Guy Marzarotti in San Francisco.

Sheriff Chad Bianco says he's investigating voter fraud, but he hasn't publicly detailed any crime.

And Riverside County election officials say no fraud has occurred.

In their order, the state Supreme Court's six justices ordered Bianco to, quote, pause the investigation, which Bianco says he's done voluntarily.

The court agreed to hear a challenge from California Attorney General Rob Bonta, who argues Bianco is overstepping his authority as sheriff.

Bianco is a leading Republican candidate in polling ahead of California's June 2nd primary.

For NPR News, I'm Guy Marzarotti in San Jose.

Sheriff Chad Bianco says he's investigating voter fraud, but he hasn't publicly detailed any crime.

And Riverside County election officials say no fraud has occurred.

In their order, the state Supreme Court's six justices ordered Bianco to, quote, pause the investigation, which Bianco says he's done voluntarily.

The court agreed to hear a challenge from California Attorney General Rob Bonta, who argues Bianco is overstepping his authority as sheriff.

Bianco is a leading Republican candidate in polling ahead of California's June 2nd primary.

For NPR News, I'm Guy Marzarotti in San Jose.