Retiring Sen. Jeff Flake, R-Ariz., said Wednesday he decided not to run again for his Senate seat because he had no chance of winning a GOP primary race in his state with President Trump in the White House.

“The bottom line is, if I were to run a campaign that I could be proud of, and where I didn’t have to cozy up to the president and his positions or his behavior, I could not win in a Republican primary,” Flake said on MSNBC. “That’s the bottom line.”