Impeachy?

There isn't any reasonable doubt about the fact that the phone call involved a request for a favor, which included an investigation of a political rival.

The question is whether this is an impeachable offense?

The constitution talks about High Crimes and Misdemeanors, but the definition of those is pretty much up to the Congress.

So naturally it will be contested.

There are a long list of actions which some consider impeachable and some don't.

Violations include campaign finance rules, obstruction of justice and others.

Still at this time these violations are being tolerated by many in his party.

So impeachment yes, conviction probably not, re-election seems unlikely.

Time will tell.