Maybe because his followers are trying to hijack the Tea Party movement making it into something its not. And maybe because they also dig up and post to FR and send viral e-mails with any anti-Palin article they can find. And maybe because they see the win by Scott Brown as a sign that the Republican Party is being reborn and that they see that as a threat.
And maybe because the Paul supporters in Texas, along with Democrats, are backing the campaign of Debra Medina (another libertarian) in the GOP primary against Perry and Hutchison. ....Medina is a whacko.