Labor leadership candidate MK Amram Mitzna criticized fellow Labor MK Isaac Herzog Tuesday over his suggestion last week that Mitzna drop out of the leadership race and join Herzog as his No. 2 man."It's a crazy idea and there is no way it will happen," Mitzna said, adding "I have returned to politics in order to lead. Herzog should be more modest, I'm the only one the public sees as a potential prime minister.""It's not a coincidence that other candidates aren't talking about becoming prime minister," Mitzna said, saying with confidence that he has a chance at the premiership.