I wonder how long until Brown is deemed a RINO. He ran as a moderate and a much better campaign. He focused on topics people cared about, listened and was elected as the "people's candidate." If he wants to be re-elected in 2012 he is going to find it hard to toe the line as is expected in the current Republican party.
General Elections are rarely about party...they are about the person running. If you look at 2006 where Democrats won in conservative districts you will find they ran the better candidate. By better I mean one that connected with the voters and ran a better campaign. I am not saying dissatisfaction is irrelevant but often the media and pols often discount the persons running and focus just on the party.