A trio of conservative groups announced Thursday they will back Mississippi state Sen. Chris McDaniel (R), who is running for the seat held by Sen. Thad Cochran (R).
The Club For Growth, Senate Conservatives Fund and the Madison Project each announced endorsements.
"Chris McDaniel is a constitutional conservative who will fight to stop Obamacare, balance the budget, and get America working again," said Senate Conservatives Fund executive director Matt Hoskins.
Added Club For Growth President Chris Chocola: "Senator Chris McDaniel represents the next generation of conservative leadership that Mississippi Republicans are waiting for."
Cochran has not yet definitively said whether he will run for reelection.
"Thad Cochran has voted for endless spending, tax increases, abortion funding, energy regulations, and most recently -- funding for Obamacare," said the Madison Project in a statement.
McDaniel announced his run on Thursday. In addition to serving in the state Senate, he is an attorney. His Web site says his practice revolves mainly around corporate and insurance defense. The Senate Conservatives Fund said he represented Mississippi in its legal challenge against the federal health-care law.