Tea-party favorite O'Donnell endorses Romney

O'Donnell cites executive experience as part of her reason for endorsing Romney. She announced her decision Tuesday night during an interview on Fox News Channel. O'Donnell gained national attention in 2010 with her bid for a Senate seat from Delaware. With tea party backing, she defeated an established Republican for the party's nomination, former governor and longtime congressman Mike Castle. She then lost the general election to Democrat Chris Coons by a margin of 17 percentage points. O'Donnell may be best known nationally for a campaign commercial in which she declared "I'm not a witch," a response to a statement she'd made years earlier in which she said she'd dabbled in witchcraft.