"do know that she has not yet earned my full support, and when each of us have the opportunity to vote, aye or nay on the floor, I would not advise that she yet count on my vote"
Can I reasonably translate that as, "I don't want to be held accountable now when the committee and the responsibility is spread across only twelve of us.  I don't want you to hold me accountable even when my vote is only one of the fifty one that will likely split along party lines but if you do then do so then when it is easier for me to pass the buck."  Or a shorter version, "Don't blame me for my actions now."