Eight GOP hopefuls castigated President Obama and each other tonight in a frequently testy debate in Ames, Iowa. Tim Pawlenty and Michele Bachmann were especially hostile to each other early, while Mitt Romney largely avoided any one-on-one battles and focused on the president. Overshadowing the debate: News that Rick Perry, who wasn't a participant, would announce his candidacy this weekend. Some highlights:
- Romney said, "I'm not going to eat Barack Obama's dog food," when asked whether he would have vetoed the debt ceiling legislation. "What he served up is not what I would have as president of the United States."