2014 Senate Primary results, for comparison:
https://elections.texastribune.org/texas-election-results/2014-primary-election/scoreboard/
U.S. Sen.
Republican - 1,313,351 Total
Democratic - 507,012 Total
The GOP is already at 1.1 Million with only 31% of the precincts counted. They will easily best that 2014 figure.
Democratic RAT - 507,012 Total