Which of the GOP’s congressional incumbents will you vote for?

The Republican Party has a problem.

The House is full of Republicans.

And they’ve all lost.

That’s not the case in the Senate.

Not by a lot.

But Republicans are still more popular than Democrats in the U.S. Senate.

And there are plenty of them in both chambers of Congress.

Here are a few who are running for re-election in 2018.

*Republican incumbents to face primary challenges: *Mark Meadows, R-N.C.: Former U.N. ambassador Mark Meadows announced Monday he will run for Senate in North Carolina.

He’s a former GOP chairman who served as Trump’s chief of staff.

*Sen. Roy Blunt, R: Blunt has been a strong voice for fiscal responsibility and limited government in the past, and has earned some moderate votes on issues like gun control.

He’d make an interesting addition to the Senate as an establishment-friendly moderate.

*Nancy Pelosi, D-Calif.: The former speaker of the House faces a challenge from former Senate Majority Leader Harry Reid, who is retiring after eight years.

*David Perdue, R (Ga.): A tea party favorite who’s held office for six years, Perdue has also criticized Trump and the president-elect on social media.

*Mitt Romney, R : The former Massachusetts governor is up against incumbent Sen. Thad Cochran, R. Miss., in 2018, and could be a viable candidate.

*Bobby Jindal, R, Louisiana: Jindal has a long history of being a hard-liner on issues, including immigration, and he’s facing a strong challenge from Democrat David Vitter, R., in a district where Trump won by more than 50 points.

*Rick Santorum, R and former Massachusetts Gov.

Mitt Romney, both: Both Republicans have been vocal critics of the president, and they’re facing a formidable challenge from a moderate Democrat.

*Jim DeMint, R(S.C.): DeMins’ former boss, former Vice President Dick Cheney, is retiring from the Senate after 22 years in the job.

DeMints’ re-emergence could provide a boost to GOP hopes in South Carolina.

*Jeff Flake, R.: Flake, a former Republican senator from Arizona, is up for reelection in 2018 in a state that went for Trump by less than 20 points.

The seat is heavily Hispanic.

*Scott Brown, R*: Brown, a Massachusetts senator, is facing a challenging primary challenge from Elizabeth Warren, a progressive icon.

*Joe Manchin, D: The West Virginia senator is a staunch defender of the Affordable Care Act and is likely to be the target of a primary challenge by Sen. Joe Manchin III, D.W.

Va., who is a rising star in the Democratic Party.

*John McCain, R *: McCain is retiring at the end of his term, but his former colleagues are keeping him in the spotlight.

A primary challenger could bring fresh blood to the party.

*Tammy Baldwin, D (WI): Baldwin is running for Senate against Democrat Tammy Baldwin, who has been the leading voice for social conservatism in the GOP.

*Steve Daines, R.*: A Montana senator who served in the Bush administration, Dain, a conservative, is running against incumbent Democrat Jon Tester, D., who has criticized Trump.

*Chris Murphy, D.*: The former Democratic congressman from Connecticut is facing former Gov.

Joe Biden.

*Tom Coburn, R; Former GOP congressman from Oklahoma: Coburn has been endorsed by former President George H.W., Bush, former Speaker of the U: House John Boehner and former Speaker Newt Gingrich.

*Rand Paul, R.(Ky.): A former two-term Republican senator and two-time presidential candidate, Paul is a strong opponent of the Trump administration.

*Lindsey Graham, R (*FL): The former South Carolina senator and former Republican presidential candidate is up in 2018 against incumbent U.C.L.A. chancellor and former Gov.-elect Phil Bredesen.

*Marco Rubio, R(*FL): Rubio has been touted as a potential vice presidential pick.

*Amy Klobuchar, D(*Minn.): The Minnesota Democrat is running to succeed retiring Sen. Tim Scott, D.-S.D., in the House.

*Susan Collins, R*: The Maine Republican is running a tough re-run of her 2010 reelection campaign.

*Kelly Ayotte, R**: The New Hampshire senator is challenging incumbent Sen., Joe Manahan, D, for the GOP nomination.

*Tim Scott, R **: Scott is retiring.

He has been an early advocate of gun control, voting against the Brady Bill and opposing gun sales to the mentally ill.

*James Inhofe, R***: The Oklahoma senator is running again for a second term, and a strong candidate for Senate.

*Pat Toomey, R ***: The Pennsylvania senator has a strong Senate campaign, and his supporters say he has been strong