There's an excellent (volunteer-run) [website](https://www.partijgedrag.nl/index.php) about Dutch politics that will ask your opinion on a bunch of historic chamber proposals (for/against/skip) and use that to show your alignment to different parties by comparing your answers with actual party votes. It has definitely swayed my vote a few times.

I suppose such a tool might not work in a first-past-the-post voting system, but in my case it certainly has certainly helped to see what politicians actually vote like rather than just trusting the promises. If you live in a country with easily accessible digital records of votes/bills/proposals, I imagine you could throw something similar together and help quite a few people.

Well aware of these tools. I've always said this but party politics is the stupidest idea ever. We should be voting on policies not people and parties. There isn't a single party which is ideologically aligned with me on enough of the significant issues. That leads to be having to pick the least bad one, and that's still bad.

There's Wahl-o-Mat in Germany, that does the same thing. There's one for each major election, from regional votes to EU representative votes.

https://www.wahl-o-mat.de/