Also, if I may urge caution, I say we should mind our 'tone' (holy crap! I said it!) so as to come across as somewhat professional, or at least serious. It'll lend itself to looking less like a "gripe" thread or post, like IDP said and will be taken more seriously.
I think it could work and do well. A regular public service and might even put us on the map.
I don't know how to collate the info, maybe in a spread-sheet format, but I don't have much computer experience, so this problem looks like the proverbial nail to me.
I do think it should include votes on anything substantial, quotes, links and certainly any info re: donations that may be relevant.
As an aside, I can't think of any pre-'10 incumbents who I'd vote for, but I haven't seen the entire freshman class nor heard of any that did a 180 after election.
Should we bother w/ the Presidential race as well? Plenty of RINO's there to be busted. Maybe we can call this project "RINO busters" or "The RINO field guide" or would that look less than serious?