President Donald Trump’s decision to take a wrecking ball to the White House’s East Wing last year has become a weapon against his party in the midterm elections, a Washington Post analysis finds.

Democrats have spent at least $1.8 million on advertisements that invoke Trump’s decision to tear down part of the White House to build a new ballroom, according to a Post analysis of spending in competitive general election races. At least four of those races — including congressional seats in Pennsylvania and New York, as well as the Florida governor’s race — have seen more than $100,000 spent by Democrats or independents on the issue.