I would recommend a good textbook or two to start with- but absent the time or inclination to parse through all that, here is a good introductory list to party and voting behavior in the US Congress:
A Unified Theory of Voting by Merrill and Grofman
Congress: The Electoral Connection by Mayhew
Disjointed Pluralism by Schickler
Unorthodox Lawmaking by Sinclair
Diverging Parties by Stonecash, Brewer and Mariani
Party Polarization in Congress by Theriault