There are many " undecided" voters who are looking for whatever excuse they can find to vote Trump. He will likely gain a few points only to lose them again next time he does something stupid.
I've seen this argument a lot, and I genuinely do not understand it. Have you seen his unfavorable ratings? Pretty much all of the undecided vote has to view him unfavorably in order for the overall numbers to add up correctly; I suspect most of these people are undecided between Clinton/third party/not voting.
