Texas House Speaker Joe Straus, a San Antonio Republican, announced Wednesday he will not run for re-election.

"I believe that in a representative democracy, those who serve in public office should do so for a time, not for a lifetime. And so I want you to know that my family and I have decided that I will not run for re-election next year," Straus said in a campaign email. "My time as a State Representative and as Speaker will end at the conclusion of my current term."

If Straus had remained in office and won the speakership, it would have been a record-breaking sixth term as leader of the chamber. First elected to his district in 2003, Straus has been speaker since 2009.

Minutes after the announcement, one of Straus' top lieutenants revealed that he also won't be returning to the Capitol. Rep. Byron Cook, R-Corsicana, who is chairman of the House State Affairs Committee, said in a statement first reported by Quorum Report that he "will pursue other opportunities to serve our great state."

In his statement Straus acknowledged his decision was “unexpected.”

“It’s been decades since someone has left the Speaker’s office on his own terms. But we have accomplished what I hoped the House would accomplish when I first entered this office, and I am increasingly eager to contribute to our state in new and different ways.”

No longer serving as speaker would allow a “greater opportunity to express my own views and priorities,” Straus said, adding that he would “continue to work for a Republican Party that tries to bring Texans together instead of pulling us apart.”

As speaker, Straus increasingly clashed with conservative elements within the GOP over issues like private school vouchers and the “bathroom bill” championed by Lt. Gov. Dan Patrick. He was also openly critical of Gov. Greg Abbott’s agenda for the July special session, comparing it to a to "a room full of horse manure."

“Our party should be dynamic and forward-thinking, and it should appeal to our diverse population with an optimistic vision that embraces the future,” Straus said in the campaign email. “I plan to be a voice for Texans who want a more constructive and unifying approach to our challenges, from the White House on down.”

Read Straus' post about the decision on Facebook below or here.