Pushing impeachment would be a mistake, says David Wasserman, who tracks House races for the non-partisan Cook Political Report.

“It’s a political loser for Democrats at the moment,” he told The Daily Beast. “If midterms are a referendum on Trump, Democrats win that referendum. If it’s a referendum on impeachment, it’s a much closer question.”

There are Trump voters out there who Democrats must win over to gain the majority in the House and possibly the Senate. Trump’s approval rating among Republicans and Independents who lean Republican was 84 percent in the most recent NBC News/Wall Street Journal poll, with just 15 percent disapproving.

Unless it is clear that a super majority of 67 will convict in the Senate, running on impeachment in the midterms may get the Democratic base excited, but it won’t win over Republican-held districts needed to regain power in the House.