Personally, I think a run-off poll isn't truly needed here since it's clear that the majority want Woodman. Doing a run-off poll would probably satisfy those who want a more clearer cut winner for one reason or another.
With all due respect, I don't think you can get much clearer than what it is now. It's almost a 20% lead with nearly 50% of all votes. It's the equivalent to Barrack Obama running against Ralph Nader for president.