The midterms could set Trump on a path toward impeachment

2. A pro-impeachment majority takes control of the House Democratic caucus

This is probably the most complicated of these four steps toward impeachment. It shouldn’t be assumed that a House controlled by Democrats would conduct an impeachment process. Rather than trying to end Trump’s presidency through a process that is likely to divide the county and could anger swing voters, congressional Democrats could use their new majority power to weaken Trump in other ways, including by blocking his legislative agenda, in an effort to ease the path to victory for the Democrats’ 2020 presidential nominee.

I can imagine House minority leader Nancy Pelosi, who was leading the Democrats well before the so-called resistance emerged, advising a Democrat-controlled House against going the impeachment route. She voted against both of the Green-sponsored measures and has spoken out against pushing for impeachment if Democrats win control of the House. Also, Democrats who win seats in November in districts previously held by Republicans might want the party to take a more cautious course. By definition, they don’t hail from liberal strongholds; otherwise, their districts would already have a Democratic representative.