A former state Supreme Court justice, Texas attorney general and a four-term U.S. senator, Cornyn had held on in the Republican Party as it transformed from the party of Bush, to the Tea Party movement and eventually the dominion of Trump.

The all-Republican Court of Criminal Appeals has undergone extensive turnover since AG Ken Paxton began targeting incumbent judges.

The Army veteran was endorsed by President Donald Trump and saw millions in outside spending on her behalf. Cain, meanwhile, was backed by Gov. Greg Abbott.