Two North Texas congressional races could chart new political course – The Dallas Morning News

North Texas will feature two intriguing congressional races that will determine if Democrats are truly gaining ground on the GOP.

One of the biggest contests in the country is the fight to replace retiring Republican Rep. Ken Marchant of Carrollton. That district, which includes parts of Denton, Tarrant and Dallas counties, has been undergoing population shifts that make it attractive to Democratic candidates.

Last year Marchant narrowly got past Democrat Jan McDowell, who is running again for the seat in 2020.

But McDowell, who has strong connections in the district, will be tested by rivals…