I don't want to dedicate too much space to the reasoning being offered as excuses for voting against the VAWA -- but as an example of that bit of gymnastics, I refer you HERE, to an article detailing Marco Rubio's thinking. I'd rather use this space for a listing of how each Senator voted last Thursday.
Courtesy of the official U.S. Senate website -- perfect for those days when "just the facts" will do.
U.S. Senate Roll Call Votes 112th Congress - 2nd Session
as compiled through Senate LIS by the Senate Bill Clerk under the direction of the Secretary of the Senate