Obama Ad Slaps McCain on the Economy

New spot slams the Republican's economics "textbook"-- including attacks for supporting President Bush, backing continued spending in Iraq, and more.

"'Economics,' by John McCain. Support George Bush 95 percent of the time...."

Click above to watch, and read script here.

Airs in 16 battleground states beginning Thursday.

McCain camp responds: "In the Senate, Barack Obama has voted in lockstep with President George W. Bush nearly half the time." Full statement here.