"selfishness score" (probably this score should be given another, less toxic, name).
How about measuring the "altruism score".
3) Voting Advice Applications (VAA)
I think a huge issue with most of these is that politicians get asked in front of an election to take stances on questions. They usually don't evaluate at all what politicians actually do when in office. For a healthy democracy it's much more important to have feedback mechanism that punish politicians for doing the wrong things while in office instead of punishing them for not saying what voters want to hear on election eve.
Let's say the journalist Bob is quite good at finding out which politicians violate their promises. Whenever a politician violates a promise Bob writes angry articles. Then when the election comes Bob recommends his readers to vote for the politician that fulfilled the most of his promises.
Efficient voting advice application that actually get used by voters to make voting decisions reduce the power that people like Bob have for punishing politicians who violate promises. Your system reduces the power of the fourth estate. Journalists get less powerful in their job of holding politician accountable.
I would rather focus on finding better ways to evaluate in-office performance of politicians, than in investing effort to match promises made on election eve with voters preferences on election eve.
You don't want to create incentives for politicians to be even more dishonest about what they promise on election eve then they are at the moment. Be careful what you wish for when you set of Moloch to optimize for something specific.
How about measuring the "altruism score".
Yes, that's an alternative, and perhaps better, term. Adding to my comments on Viliam's comment, I think it's easier to infer absence of selfishness than presence of selfishness. If your views don't correlate with your interests, then clearly you're not taking positions on selfish reasons. But if they do, then you still might not necessarily take positions because of selfish reasons. As Viliam points out, the correlation might have other causes.
I don't quite follow your argument concerning VAA. You're s...
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