Under any other circumstances, election night in November should be a good night for Democrats. The loyal Democratic Party opposition has defied the laws of physics for more than a decade by capturing voter enthusiasm through opposition to Donald Trump. Obviously, it hasn’t always worked, given Trump’s 2024 win. But it has been useful for Democrats and will continue to be through Nov. 3. Add to that the added benefit of a motivated voting bloc after the Louisiana v. Callais redistricting decision, which empowered state legislatures to redraw congressional maps. If you’re a Democrat, you have plenty of reasons to...