Railroad Commissioner Barry Smitherman announced today he intends to run for attorney general. In a video posted on his website, Smitherman asked voters to “join my conservative crusade to keep Texans safe and to vigorously defend the laws and the Constitution of the great State of Texas.”

Smitherman is a former district attorney and served on the Public Utility Commission from 2004 until 2011, when Gov. Rick Perry appointed him to the Railroad Commission.

It has been widely speculated that current Attorney General Greg Abbott is planning to run for governor. Smitherman said Monday he would only run if Abbott does not seek reelection.