Crazy Johnny McAin't tried to pull a Chimpy on Obama today along with Wilbur The Flipflopper (Wilbur is Mitt Romney's real first name).
It turns out that the veteran has crappy ratings with veterans groups:
In 2006 Iraq and Afghanistan Veterans of America gave Senator McCain a grade of D.
Senator McCain supported the interests of the Disabled American Veterans 20 percent in 2006.
Senator McCain supported the interests of the Disabled American Veterans 25 percent in 2005.
Senator McCain supported the interests of the Disabled American Veterans 50 percent in 2004.
On the votes that the The Retired Enlisted Association considered to be the most important in 2004, Senator McCain voted their preferred position 0 percent of the time.
http://www.vote-smart.org/issue_rating_category.php?can_id=S0061103&type=category&category=Veterans%20Issues