Wall Street Journal:

Republicans and Democrats from high-tax states have been trying unsuccessfully for seven years to dislodge the cap that congressional Republicans built. Their best chance for success is about to arrive.

“It’s a really hard issue to thread the needle on, and neither party’s been able to figure out how to do it,” said Anna Taylor of accounting firm Deloitte, who was a tax aide to current Senate Majority Leader Chuck Schumer (D., N.Y.).

The cap, along with much of the 2017 tax law, expires at the end of 2025. This time, no matter who wins Tuesday, it will be a key piece of the tax fight. Cap opponents could have a leg up if lawmakers from New York, New Jersey and California hold a congressional balance of power in a slim majority for either party, commanding a large-enough faction to block bills that don’t address their concerns.

“There’s a natural landing pad for a deal,” Reed said, suggesting a version of a cap that would hit very few households. “It’s just going to take a lot of theater and political gamesmanship to get there.”