Some voters were complaining in Texas that Sen. Barack Obama was saturating the airwaves with commercials. Even supporters grumbled they couldn't click through the channels each night without seeing a flood of his ads.
Sen. Hillary Clinton has repeatedly said her rival is outspending her, and she's using his ad spending in Pennsylvania to raise money on her Web site.
She may have public opinion on her side, as a new American Research Group poll gives Clinton a whopping 20-point lead over Obama in Pennsylvania in part because of his many ads.
Notable in the poll summary is this tidbit:
23% of likely primary voters say that excessive exposure to Obama's advertising is causing them to support Clinton. This compares to 19% of likely primary voters in Ohio who said that excessive exposure to Obama's advertising in that state caused them to support Clinton. Too much advertising can harm a campaign.