Because he is honest. He is not a fake.
Gulliani is fake, he has that bullshit smile and can "turn it on" and smooze like Romney. That slim ball salesman swarmy attidue.
And unlike the other cadidates that just look and feel honest about who they are, Thompson is the only hope of winning among that group.
Five things to love about Thompson:
1. He's not Clinton.
2. He's not Obama.
3. He's not Giulani.
4. He's not Romney.
5. He's not McCain.
I would vote for a turnip before I would vote for any of that lot.