MARION — Dotti Loscabio thought she might give Joe Biden some good luck if she shook his hand after he spoke Monday.“I shook (President Bill) Clinton’s hand and he became president. Maybe it will give Biden good luck,” Loscabio, 75, of Marion, said as she sat in the Prairie Hill Pavilion Banquet Hall.While Loscabio is planning to caucus for Pete Buttigieg next week, she was open to changing her mind to Biden.