Former Tennessee Governor Bill Haslam is not running for Senate.

According to a story published today in the Tennessean, Haslam wrote an editorial for the USA Today Network that he has considered the position since January.

Haslam called his choice to not run “the hardest vocational decision of my life.”

Senator Lamar Alexander said in a press release that he understands Haslam’s decision.

Bill Haslam would be a terrific United States senator, but he has served Tennessee well and unselfishly for 15 years as governor and as mayor of Knoxville, and I can completely understand his desire to take a different direction with his life,” Alexander said.