Thompson just waited too long to come into the race. If he enters when he was the strongest between April and June, he would have built alot more momentum.
Even coming in earlier with his current style and platform would not have made a difference. His delivery is just poor. He is not the quality candidate with the delivery people are looking for.
I like Rasmussen's take on NH poll. Thompson is so far behind he's even trailing Paul and Tancredo. His favorability has even made it to Paul levels. I guess the logic in announcing on Leno rather than going to the NH debate was flawed...