Sen. John Cornyn (R-Texas) won his party's Senate primary Tuesday, defeating his closest opponent by double digits.
Cornyn held a comfortable lead over his GOP challengers as election results came in Tuesday evening, defeating four Republican primary contenders who all lack experience in government at the state or national level.
The Texas incumbent won an endorsement for reelection from President Trump last February when it was reported that former Rep. Beto O'Rourke (D-Texas) was considering entering the race against him. O'Rourke later opted to continue his presidential campaign instead.
"Senator John Cornyn has done an outstanding job for the people of Texas," Trump tweeted last year, adding that the three-term senator had his "complete and total endorsement."
A number of Democratic challengers have declared for the seat, with Air Force veteran M.J. Hegar and state Sen. Royce West leading the field as results poured in Tuesday evening.