I love how the most dangerous republicans: the Northeastern republicans "blablabla I'm socially liberal, but I'm a huge fiscal conservative, I love tax cuts blablabla. But I successfully look like a moderate, even if I always side with the most conservative members of my party fiscally, except if my vote isn't need to pass such legislation", are always screwing themselves by being notorious carpetbaggers: first it was Bill Weld, now it's Scott Brown.
Yeah, seems quite dumb doesn't it?
How does anyone think this could possibly be a good idea?
Simply because they are politicians, so they are egocentric, and they love when the press speaks about them. Scott Brown is definitely one of the biggest attention whore I have ever seen (with Palin of course). Politicians have feelings, (see Christie's chief of staff), and they make mistakes, because of their egocentrism!
And like Weld, Scott Brown's victory was definitely impressive, even if Massachussett is extremely elastic, it's still one of the most liberal state of the USA. So, for them, if they have won in such liberal areas, they can win everywhere. "New Hampshire is much less democrat than Massachussetts, I have my chances!".
And considering he watched Weld crash and burn in New York before, its surprising that he still went ahead with it. Carpetbaggers never win, but politicians like Brown always think they're the exception.