My bet is that if he announces, he will lead the Republican field shortly thereafter and will go on to win the Presidency. He is the only Republican running that can garner support from the full spectrum of Republicans while also capturing independents and moderates. He has far fewer negatives that Rudy or Romney while having more positives.
My only concern at this point is that he may not run. I am confident that if he does run, the nomination is his. Like I said, we shall see.
His media blitz is sucking all the conservativce oxygen out to the campaign for any other prospective conservative candidate.
Thompson won't be able to raise enough money to mount a credible campaign.