The results of the 2022 Collin County Republican Primary are in! We had a number of great candidates and competitive races this year, so check the results below to see who WON and who is going to a RUNOFF election in the coming months. Turn out for this election was pretty good! Collin County’s total registered voters is 668,679. A total of 117,051 ballots were cast with 80,491 Republicans voting in their Primary and 36,560 Democrats voting in their primary.