MADISON - Wisconsin may soon be in a minority of states that don't allow voters to register online. The state, long considered a model for its high voter turnout and election administration, seems stubbornly old-fashioned as it sticks to paper registration while others move to online systems that are simpler, cheaper and less prone to errors, elections experts told lawmakers recently. Legislators from both parties have expressed interest in online registration, but progress has been stymied by a longstanding fight over same-day voter registration and other party divisions.