I didn't understand why Senator Obama and some of his supporters wanted to prevent [North Carolina] and other states from actually being able to vote.
You've got to love the "actually" part which makes it clear that there are no metaphors being used here
. She is saying, explicitly, that Obama wants to prevent people from being able to vote.
I now regret ever having spoken well of her. There's no reason for this, other than blind ambition on her part.