List: Who are the Democratic lawmakers calling for Joe Biden to leave the race?

More and more Democratic lawmakers have come out against President Joe Biden's bid for reelection.

Most recently, vulnerable Sen. Sherrod Brown of Ohio added his name to this list, citing his constituents' concerns.

"I agree with the many Ohioans who have reached out to me," Brown said in a statement Friday. "At this critical time, our full attention must return to these important issues. I think the president should end his campaign."

More: How many Democratic lawmakers on Capitol Hill want Biden to step aside?

A rocky debate performance in June has turned up scrutiny on Biden and raised concerns about his ability to serve another four years − or win at all this November.

Brutal split screen: Biden holed up with COVID while Trump accepts nomination

Here are those in Congress from Biden's party calling for him to exit the race:

• Sen. Sherrod Brown, Ohio
• Sen. Martin Heinrich, N.M.
• Sen. Jon Tester, Mont.
• Sen. Peter Welch, Vt.
• Sen. Joe Manchin, W.Va. (Manchin announced he would leave the Democratic Party and register as an independent in May.)

• Rep. Earl Blumenauer, Ore.
• Rep. Ed Case, Hawaii
• Rep. Kathy Castor, Florida
• Rep. Sean Casten, Ill.
• Rep. Jim Costa, Calif.
• Rep. Angie Craig, Minn.
• Rep. Lloyd Doggett, Texas
• Rep. Jesus "Chuy" Garcia, Ill.
• Rep. Raul Grijalva, Ariz.
• Rep. Jim Himes, Conn.
• Rep. Jared Huffman, Calif.
• Rep. Greg Landsman, Ohio
• Rep. Mike Levin, Calif.
• Rep. Zoe Lofgren, Calif.
• Rep. Seth Moulton, Mass.
• Rep. Betty McCollum, Minn.
• Rep. Morgan McGarvey, Ky.
• Rep. Scott Peters, Calif.
• Rep. Brittany Pettersen, Colo.
• Rep. Mark Pocan, Wis.
• Rep. Mike Quigley, Ill.
• Rep. Pat Ryan, N.Y.
• Rep. Adam Schiff, Calif.
• Rep. Brad Schneider, Ill.
• Rep. Hillary Scholten, Mich.
• Rep. Mikie Sherrill, N.J.
• Rep. Adam Smith, Wash.
• Rep. Eric Sorensen, Ill.
• Rep. Greg Stanton, Ariz.
• Rep. Mark Takano, Calif.
• Rep. Marc Veasey, Texas
• Rep. Gabe Vasquez, N.M.

Contributing: Moira Warburton, Reuters

This article originally appeared on USA TODAY: List: Who are the Democratic lawmakers calling for Joe Biden to leave the race?