State Sen. Joseph Silk, R-Broken Bow, said he will enter the 2020 Republican primary in Oklahoma's 2nd Congressional District against four-term incumbent Markwayne Mullin.

Mullin's chief of staff, Mike Stopp, told the Tulsa World it is Mullin’s intention to seek re-election despite announcing his intent in the past to limit his time to only three terms. 

In a written statement announcing his candidacy for the U.S. House seat, Silk said he decided to leave the Legislature because of its “very liberal” leadership.

During his five years in the Senate, Silk has been known for his hard-line positions on abortion, guns and taxes. Those positions have often put him at odds with the leadership of his own party.