Hard disagree. It’s really easy for candidates to talk the talk on the campaign trail, and then do a 180 once they’re in office.

That being said, this doesn’t work if you let them use flowery speech and vague promises. If you had parties submit a platform of actually actionable decisions they would make (e.g. “decrease the federal minimum wage”), you’d be able to suss out what they actually want to do. It would also provide a rubric for re-election - how many of the things you wanted to do did you accomplish? Are there good reasons why you weren’t able to?