Yes, the conduct by the GOP and Romney operatives is despicable, but the Obama alternative is even worse. Four more years of Obama and elections in whatever is left of the USA will just be for show. There will be no tomorrow for conservatives if that happens and Romney is the only vessel to try and stop the planned destruction of America.
When battling today’s democrats you must do what any tactician would do, concentrate your force. That’s what the republicans are doing.