freeway corridors, including just south of Interstate 635.

But these potential voters are unlikely to show up in normal midterm elections, which could be challenging for Allred. Yet his grassroots campaign appeared stout in the primary, and the Trump backlash and Democratic enthusiasm could flood the polls with unlikely voters.

If there is a prodigious blue wave, Sessions will be swept out of office.

Still a conservative district

Sessions and Republicans have pushed back against the narrative that he's in trouble simply because Hillary Clinton won his district against Trump.

He has a point.

In that same election he was unopposed and outpolled Clinton. That's just part of the good news for the incumbent. Every major Republican candidate, with the exception of Trump, won in the district. That included sheriff's candidate Kirk Launius, theformer Dallas police officer and 2016 GOP nominee for Dallas County sheriff who was trounced by incumbent Lupe Valdez. Republican House members Jason Villalba, Morgan Meyer, Linda Koop, Cindy Burkett and Angie Chen Button also won in the district, suggesting that down-ballot candidates didn't get caught up in a Trump backlash.

Sessions, 63, is a veteran, tenacious campaigner with strong connections to the GOP and business establishment in the district. He'll rely heavily on strongholds in Richardson, Garland, Rowlett and Sachse.

His challenge is to convince business types that no longer identify with the party of Trump to stick with the Republican label for his contest against Allred. And it would be troubling for the Republican if the coordinated effort by Dallas County Democrats up and down the ballot, along