Gov. Sarah Palin dropped a day-ending bombshell. She's pregnant. Palin said Wednesday that she and her husband Todd are expecting their fifth child sometime in mid-May.

When asked about how this new child would affect her, the Governor said, "This is one of those circumstances that has kinda shifted our way of thinking. It certainly makes me very much more so committed to even wanting to stay in Alaska, you know wanting to raise kids in Alaska and at some point in the future I don't know how far off in the future but in some point maybe there will be other doors open."

Her daughter Piper Palin exclaimed, "I'll be really excited to be the big sister."

The Republican governor said she did not believe the pregnancy would affect her ability to run the state. Palin wouldn't disclose whether the child will be a boy or a girl because she hadn't shared that with their children yet.

Their children are: Track 18; Bristol 17; Willow 13; and Piper, 6. Track enlisted in the U.S. Army last year.