Good stuff. I'll just mention one thing: should vote pairing become more popular in the future, the legality is uncertain. In the Wikipedia article you referenced (which I wrote in full), I wrote:
"On August 6, 2007, the Ninth Circuit Court of Appeals ruled on a case, Porter v. Bowen, stemming from the California Attorney General's shutdown of voteswap2000.com. Vote-swapping, it said, is protected by the First Amendment, which state election laws can't supersede, and it is fundamentally different from buying or selling votes. Furthermore, vote pairing ...
How much financial aid is offered?