Rep. Adam Schiff (D-CA) leaned on a vulnerable Senate Democrat on the eve of his own Senate bid announcement to kickstart his fundraising campaign in what will inevitably be a crowded primary for Sen. Dianne Feinstein’s (D-CA) seat.

Even though Feinstein has yet to make an official announcement on if she would seek reelection, her Senate colleagues are already starting to pick sides. Sen. Jon Tester (D-MT) sent out a joint fundraising email with Schiff on the eve of his Senate announcement.

Sen. Jon Tester (D-MT) on Capitol Hill on August 05, 2021, in Washington, DC. (Chip Somodevilla/Getty Images)

“I’ve got some bad news,” Schiff stated in his email obtained by Breitbart News. “In the dead of night, Kevin McCarthy and the Republican Party did yesterday what they’ve threatened for the last two years.”

The email from Schiff was referring to House Speaker Kevin McCarthy (R-CA) blocking him from being placed on the House Intelligence Committee after he “knowingly… used a fake dossier” that led to the Russia “collusion” farce and ultimately set up former President Donald Trump’s first impeachment, something that Schiff based his Senate bid on.

Rep. Kevin McCarthy (R-CA) on the House steps of the U.S. Capitol on Thursday, September 29, 2022. (Tom Williams/CQ-Roll Call, Inc via Getty Images)

“This is political retribution for my leading the impeachment of Donald Trump, pure and simple, and a dangerous effort to go after anyone who holds them accountable,” Schiff claimed in his email. “It also turns the Intelligence Committee into a political plaything for their right-wing supporters.”

Impeachment managers House Intelligence Committee Chairman Adam Schiff (D-CA) left, Judiciary Committee Chairman Jerrold Nadler (D-NY) and others are seen arriving to the Senate before Schiff read the articles of impeachment against President Donald Trump on the Senate floor on Thursday, January 16, 2020. (Tom Williams/CQ-Roll Call, Inc via Getty Images)

Schiff’s email asked supporters to “contribute $10 or whatever you can spare” to help the congressman and Tester “respond to this baseless attack on my ability to serve my constituents and the American people.”

The campaign donations will be split between them evenly.

In this June 9, 2021, file photo Sen. Dianne Feinstein (D-CA) attends a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing on Capitol Hill in Washington. (Stefani Reynolds/The New York Times via AP)

As Breitbart News noted, Schiff joins Rep. Katie Porter (D-CA) in the race, a move that could potentially pressure Feinstein to retire since she has yet to announce her decision on another term. The 89-year-old said on Wednesday she would make her final decision in the next couple of months.

Additionally, the New York Times previously acknowledged that some of the most challenging seats for the Democrats to keep would be Tester’s Montana seat, Sen. Joe Manchin’s West Virginia seat, and Sen. Sherrod Brown’s Ohio seat. Trump won those states by 16, 8, and 29 percent in 2020.

Jacob Bliss is a reporter for Breitbart News. Write to him at jbliss@breitbart.com or follow him on Twitter @JacobMBliss.