O'Donnell has trouble airing 30-minute TV ad in Delaware By Philip Rucker Washington Post Staff Writer Monday, November 1, 2010; 11:12 AM Christine O'Donnell is taking a page from the playbook of Barack Obama. The Republican Senate candidate has produced a 30-minute television advertisement in the form of a documentary chronicling her connection with the people of Delaware. But unlike Obama's ad at the end of the 2008 race, the tea party insurgent's campaign has run into obstacles getting it in front of voters before Election Day. The campaign did not purchase advance time on networks in the Philadelphia or...