All five of Oklahoma’s seats in the U.S. House of Representatives are in this Tuesday’s primary election. Rep. Kevin Hern (R-Okla.), Rep. Frank D. Lucas (R-Okla), Rep. Tom Cole (R-Okla.) and Rep. Stephanie Bice (R-Okla.) are all seeking reelection, whereas the current representative for Oklahoma’s District 2, Markwayne Mullin, is instead running to replace Sen. Jim Inhofe in the U.S. Senate.