Did he show you ID? I’d contact the state party and see if this was for real or not. You’re never going to be able to “clean up” voter rolls by going door to door, there are just WAY too many people on those rolls.
I think it sounds a little fishy.
1. Not smart to leave your expensive car out in the driveway so you can keep your worthless junk in the garage.
2. Always, always ask for ID and group affiliation of anyone doing something like this.
3. Use the peephole and don't answer the door in the first place.
Experience, as the saying goes, is something you get, AFTER you need it. Again my thanks to all my FRiends.