If you're interested in the Mexican congress, here is neat little report from Integralia, the new consulting company of ex IFE head Luis Carlos Ugalde.
It includes data such as attendance, party unity in votes, initiatives, etc. Direct PDF
One fun fact: guess the least productive legislator, with only six (!) percent attendance in congressional votes?
Josefina Vázquez Mota.
Gee, wonder what's been keeping her so busy.