Sit On The Fence Meaning

Example : 1897, John James Procter, The philosopher in the clearing, page 240:  and Bloomah will sometimes sit on the fence, concerning whose discretion, the same thing may be said...1956, Society for Promoting Christian Knowledge (Great Britain), Theology, page 22:  The curate refused to label himself; so the squire growled, "Oh, you sit on the fence, do you?"1972, Joseph Robinson, The first book of Kings, page 207:  Elijah stepped forward and said to the people, "How long will you sit on the fence? If the LORD is God, follow him; but if Baal, then follow him."