“Thanks, but no thanks!” That’s the reaction actress Lindsay Lohan recently received after offering to publicly endorse Barack Obama’s campaign for the White House.

After panning uber-conservative Republican Vice Presidential nominee Sarah Palin in a Myspace blog over the weekend, Lindsay expressed an interest in becoming a major cheerleader for the Democratic ticket, even offering to host a series of events targeted toward younger voters. It was a proposition the Obama camp politely declined.

So what gives? Apparently, a cocaine-addicted, DUI-driving former child star, who earns more headlines for a rumored same-sex romance than her uneventful acting career, ”is not exactly the kind of high-profile star who would be a positive for us,” a campaign source told the Chicago Sun-Times this week.