A Twitter fight between billionaire environmentalist Tom Steyer and former senior adviser to former President Barack Obama David Axelrod highlights a debate over whether Democrats should drum up impeachment talk ahead of the midterm elections and pursue proceedings if the party retakes the House.

Though a handful of House Democrats have pushed for impeaching President Trump, the majority of Democrats want to stay away from the topic, arguing there isn’t enough evidence, and that such talk would only wake up Trump’s base.