(CNN) - John McCain's campaign released a Web ad hours before the vice presidential debate that highlights embarrassing statements from Joe Biden and sarcastically asks what the Delaware senator might say Thursday night.
The McCain campaign has been touting Biden's debating skills in an effort to raise expectations of the Democratic VP candidate ahead of his only face-off with rival Sarah Palin — but takes the opposite approach in the new video.
"What might Joe Biden say at tonight's debate? Anything's possible," the announcer says before clips of past Biden gaffes are shown, including a 1987 town-hall where he told a voter, "I think I probably have a much higher IQ than you do."
Other now-famous Biden moments shown in the ad include his off-the-cuff statement two years ago that "you cannot go to a 7-Eleven or a Dunkin Donuts unless you have a slight Indian accent…I'm not joking."
The ad also includes newly-minted gaffes from the campaign trail, including a September rally during which he accidentally told a man in a wheel chair to "stand up…let them see you," and a town-hall one month ago when he praised Hillary Clinton and said she "might have been a better pick than me."
"Ready to gaffe? Yes. Ready to lead? No," the ad's announcer says.
Last week, the RNC launched “The Joe Biden Gaffe Timeline,” a Web site that features “an interactive timeline, map, and videos to track Biden’s most noteworthy fumbles and missteps since becoming Barack Obama’s running mate.”
Watch: Biden-isms become an issue?
But most of the week has followed the standard convention of pre-debate spin: the campaigns have each downplayed their own candidate’s skills, and plugged their opponent’s. In a conference call with reporters Wednesday, Obama surrogate and Missouri Sen. Clair McCaskill said Biden "has a tendency to talk forever, and sometimes say stuff that's kind of stupid." The Democratic National Committee also circulated news reports praising Palin's performance in the 2006 Alaska gubernatorial debates.
Meanwhile, McCain-Palin spokesman Ben Porritt said Wednesday Biden is the "Cicero of the Senate, who has been an amazing debater for 30-plus years."