The deadline to register to vote in Texas is coming up in a hurry. The primary runoff election is on July 14th, and Monday is the last day to register to vote in it. The election will determine candidates for county, state and national races. Voters who voted in the March primary will only be allowed to vote in the runoff election of the same party. Voters who didn't vote in the primary can vote in either the Republican or Democratic primary runoff. Early voting begins June 29th and ends July 10th.