When they even try to use argument or logic, which is rare. Their main tactic is personal attack and complete misdirection, usually.
How about these:
"Go back to D U" (nah, I'm not a masochist. I Pass!)
" You're not a Republican" Well, I have voted Republican since high school(Nixon). I don't know what else to say.
"You are a troll"......being a conservative is now troll-like??
"Don't disrupt the President in a time of war"
This is my favorite. Bush gets an A on foreign soil WOT, but he gets an F on the domestic WOT. We could easily have 10,000 al-queda terrorists in the USA who entered through Mexico because the President is pro illegal immigration. And I have no right to criticize????