From the RNC: Introducing Sarah

John McCain's prepping America for Sarah Palin's speech Wednesday night with a new 30-second TV ad. Sacramento Bee.
It contrasts the Alaska governor with Democratic presidential nominee Barack Obama. Palin, the presumptive vice presidential nominee, "has a record of bipartisan reform," the ad says. Obama is the Senate's "most liberal."
Palin "took on the oil producers," while Obama's reputation is "empty words," an allegation his backers would vigorously dispute.
Palin is to speak to the convention Wednesday at 10:30 P.M. eastern time.