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and good morning. welcome to "today" on a wednesday morning. >> christine o'donnell virtually unknown just a few weeks ago, but this morning she is officially the gop's candidate for the senate seat. >> she defeats mike castle. she's now the sixth tea party candidate to win a primary race this year. but some are saying her win could actually be a costly blow to the republicans reclaiming the senate in november. also ahead, for the first time, we're hring from the connecticut doctor who was the only one to survive a brutal home invasion. his wife and two daughters were killed. what ...

we'll tell you today, wednesday, can they really work for you? we'll tell you today, wednesday, september 15th, 2010. captions paid for by nbc-universal television and good morning. welcome to "today" on a wednesday morning. i'm matt lauer. >> and i'm meredith vieira. christine o'donnell virtually unknown just a few weeks ago, but this morning she's officially the gop's candidate for the senate seat vacated by joe biden. >> o'donnell is now the sixth tea party candidate to win a race this year. but this morning, some are saying her win could actually be a costly blow to the republi...