Kremer and the Tea Party activists are trying to turn the race into yet another nationwide referendum on what they believe to be the exclusive nature of the Republican Party. Both the state and national parties opted to endorse Castle months before the primary, all but relegating O’Donnell to the fringe and feeding the Tea Party claim that politics has become little more than an elite club. Kremer’s outfit spent more than $1 million on television, radio and print advertising in Nevada and Alaska, money that was collected in donations of $5,000 or less from a network of 400,000 online supporters. Now she is running the same play in Delaware. “The Republican Party’s behavior here is just unacceptable, and it’s absolutely what we are fighting across the country,” Kremer told me after the press event. “They are acting like they own this seat.”…

But even in this time of unease, Kremer and her troops may be asking a lot of Delaware Republicans to lift an untested hopeful like O’Donnell over a veteran like Castle. O’Donnell came of age in the era of cable-TV politics, fashioning herself as a sort of all-purpose conservative pundit and commentator. She spoke out against premarital sex on an MTV show, Sex in the ’90s, and has appeared on everything from The O’Reilly Factor to The Glenn Beck Program. She has run for the Senate three times, including once in 2008 as the party’s nominee. That year she attracted nearly 141,000 votes but still lost to Biden by about 30 points even though he was also running for Vice President. Though she has worked in public relations in the past, O’Donnell told the Delaware News Journal in March that she was doing “odd jobs” to pay her living expenses.