Vermont Sen. Bernie Sanders, Lt. Gov. Gavin Newsom, and Los Angeles Mayor Eric Garcetti are set to stump for Orange County Democratic House candidates this week, the latest in a rush of prominent political figures trying to rally support in the region’s pivotal congressional races.

On Friday, Sanders will speak at an Oceanside rally in support of environmental lawyer Mike Levin, who is running against Republican Board of Equalization member Diane Harkey for the open 49th Congressional District seat soon to be vacated by retiring nine-term Rep. Darrell Issa (R-Vista). That district crosses Orange and San Diego counties.

Sanders, who ignited a national progressive resurgence during his loss to Hillary Clinton for the Democratic Party’s 2016 presidential nomination, is rumored to be considering another presidential run. He’s on the tail end of a nine-state trip in support of Democratic candidates, many in potential swing states. Sanders last visited Southern California in June, speaking in Anaheim in support of wage increases for Disney employees and Los Angeles and Long Beach port workers.

Then on Saturday, Newsom, the front-runner for governor, and Garcetti, another rumored presidential hopeful, will rally support in Buena Park for Democratic House candidate Gil Cisneros. Cisneros, a Navy veteran and lottery winner, is running in a tight race against GOP former Assemblywoman Young Kim for the 39th Congressional District, where 13-term incumbent Rep. Ed Royce’s (R-Fullerton) is retiring. The 39th spans Orange, Los Angeles, and San Bernardino counties.

Later Saturday, Garcetti will stump for Democratic CA-45 candidate Katie Porter, who’s running against incumbent Rep. Mimi Walters (R-Irvine), and for Democratic CA-48 candidate Harley Rouda, who’s challenging 30-year incumbent Dana Rohrabacher (R-Costa Mesa).

The GOP-held Orange County congressional districts are four of seven in California that Democrats are targeting as some of the 23 seats they’ll need to gain to retake control of the U.S. House of Representative.

Since September, those competitive contests have drawn big names to Southern California: former President Barack Obama, former Vice President Joe Biden, and Republican National Committee Chairwoman Ronna Romney McDaniel have all come to town.

Sanders’ rally for Levin will be held at 6 p.m. at MiraCosta College Gymnasium, 1 Barnard Drive.

Garcetti and Newsom will address volunteers at a canvassing event at a local United Food & Commercial Workers union headquarters.