Weld County District Attorney and 2010 U.S. Senate candidate, Ken Buck, has filed to run for the U.S. Senate in 2014.

Kurtis Lee of The Denver Post scooped the run, quoting longtime Buck consultant Walt Klein saying Buck is back to “finish the job.”

Buck is full of comebacks lately, having beaten cancer back in May.

He joins State Senators Owen Hill and Randy Baumgardner in the GOP primary. State Representative Amy Stephens is also likely to announce a run.