On the trail today, Mike Huckabee says he’s not ready to concede defeat in the Washington Republican Caucus.The latest numbers show John McCain leading Huckabee, 25.5% to 23.7%, with Ron Paul running a relatively close third at 20.6%.Huckabee told NBC’s Tim Russert that he’s looking at a possible legal challenge since Republicans stopped counting at 87.2% of the precincts reporting.