"Turn Texas blue" has been more of a punchline than a battle cry in the Lone Star State lately, but Democrats' enthusiastic turnout in Tuesday's Senate primary has given them hope for November.Why it matters: In counties across Texas, Democratic voters made up a dramatically larger percentage of the electorate than in 2024 — with big increases in hot battlegrounds such as mostly Hispanic South Texas and the well-off suburbs of North Texas.Zoom in: Democrats and what appeared to be a significant...