Dallas Co. was the epicenter of Democrats’ 2018 surge. They flipped five House seats, one Senate seat and one congressional seat. They swept every countywide office. Former U.S. Rep. Beto O’Rourke (D-El Paso) doubled up U.S. Sen. Ted Cruz, beating him by 33 points.

Republicans ended up holding two state House seats, their fewest since 1970. Rep. Morgan Meyer (R-Dallas) squeaked by Joanna Cattanach by 220 votes out of more than 78K cast. Rep. Angie Chen Button (R-Garland) defeated Brandy Chambers by just over 1,100 votes. Each won their previous contested race by around 8K votes. The remaining Republican legislative candidates were overwhelmed by a combination in increased Democratic straight-party votes (+7K from 2016) and decreased Republican straight-party votes (-9K from 2016).

Map of precinct-level straight-party vote in 2014 and 2018

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Straight-party Shifts

Compared to 2012, 37K more Democratic straight-party votes were cast in the county. Republicans cast 24K fewer straight-party votes, creating a net shift of 61K votes. The countywide numbers don’t reflect how this shift took place.

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