An announcer says McCain earned Cheney's support by voting with the White House 90 percent of the time, adding, "That's not the change we need."
Cheney has some of the lowest approval ratings of any national political figure.
Cheney stars in new Obama campaign ad
11/2/2008 SPRINGFIELD, MO The ad opens by touting Obama's recent endorsements from
investor Warren Buffett and former Secretary of State Colin Powell,
then cuts to video of Cheney from an event Saturday in Wyoming.
