Another Republican has joined the list of those not running next year -- Rudy Giuliani says he won't be a candidate.
The Republican former New York mayor told a gathering of Long Island business executives on Tuesday that it's too late for him to join the field of candidates competing to challenge President Barack Obama.
Giuliani says Romney appeals to the party's head while Texas Gov. Rick Perry appeals to its heart.
Giuliani says that Romney's shifts on issues like abortion, gay marriage and universal health care will probably be a problem for him in the campaign.
Giuliani's announcement was first reported by Politico.