MILWAUKEE, Wis. – The Republican presidential candidates will face off in a debate Tuesday night for the first time since an October showdown that left all the candidates complaining.
Donald Trump discussed his expectations on "Good Morning America," saying, "I have no idea what's going to happen, but it will be interesting."
An ABC News/Washington Post poll released Tuesday shows Trump and Ben Carson statistically even in the race to win over Republican voters, although Carson trumps Trump when the question is put to all Americans.
In recent days, Trump has turned his attacks toward his main rival.
"You hit somebody in the face with a lock and that's supposed to make you credible?" Trump said about Carson.
Carson has been the focus this week of reports questioning the truthfulness of accounts in his autobiography, from his violent youth to a scholarship offer from West Point.
"You're asking me about something that occurred 50 years ago, and you expect me to have the details on that?" Carson recently said.
Meanwhile, Sen. Marco Rubio also faces renewed questions about his past use of a Republican party credit card when he was state legislator.
Former Gov. Jeb Bush went on the attack against Rubio in the last debate, and Rubio's campaign on Tuesday released an ad ahead of the upcoming debate, featuring clips of Bush praising Rubio through the years.
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