Ohio congressman Ryan challenges Pelosi for House Democratic leader

By Susan Cornwell WASHINGTON (Reuters) - U.S. Representative Tim Ryan of Ohio said on Thursday he was challenging House Democratic leader Nancy Pelosi, who has led the party in the chamber for 14 years, as Democrats question party strategy and leadership after a stinging general election defeat. Ryan, 43, who has been in Congress since 2003, said in a statement that Democrats had only been in the House of Representatives majority for four of the past 18 years, "and last week's election results s