Most celebrities that you meet during a campaign are very passionate about the candidate or cause they support but frequently don't really have a clue. They tend to be strident and ill-informed. There are certainly exceptions.
They also tend to perform better for a candidate when they have a script. You saw Clint Eastwood at the Republican National Convention without a script. Here you can see him with one. Is he the execption to the ususal celebrity endorser?
This ad comes from the Karl Rove Super Pac - American Crossroads.
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