Brian Birdwell came in closest to Sibley, trailing by more than 2,500 votes with all precincts reporting. Birdwell also is a Republican and survived the Sept. 11 terrorist attack at the Pentagon.
The candidates are vying to serve out the remainder of Republican Sen. Kip Averitt's term following his resignation. The seat includes 10 counties stretching from Waco to the outskirts of Fort Worth.