A head to head comparison of the Texas 2018 General Election gives us an idea of the break down of the voters.
Ted Cruz received 4.26M (50.89 %) votes, beating Beto O'Rourke who gained 4.05M (48.33 %) by 214.92k votes in Texas.
Beto O'Rourke won 32 counties out of the 254 counties that make up Texas. The record shows that Ted Cruz won 222 counties.
During the 2018 general elections, over 8M total number of votes were cast. Beto O'Rourke got 4,045,632 (4M) over Neal Dikeman 65,470 (65k). He won the popular vote by 4,045,632 (4M). His victory in the State of Texas (with 4,045,632 votes) represents 50.0% of his popular vote victory.
Top 15 Counties in General Elections
All Candidates (Senate General Elections)
These 15 counties play an important role in these Primary elections. If a candidate, can get a sizable majority in the largest counties (Harris, Tarrant and Dallas), it becomes very difficult to win majorities in the smaller counties without voter outreach and increased voter participation in them.
Top 15 Counties Comparison in General Elections
Harris, Dallas and Travis, three of the larger counties voted in favor of Beto O'Rourke, giving him a 492k vote advantage.