We need to find a way to persuade the fence hangers to come over to our side.The senator stated he would be a fence hanger until the very minute of the vote.
fence hanger
noun in motor racing, a spectator, usually female, who is more interested in the participants in the race than in the race itself US, 1980
fence hanger
n. someone who cannot decide which side to be on. We need to find a way to persuade the fence hangers to come over to our side.