Associated Press, May 11, 2011 Madison - Protesters have forced a halt to a state Senate session. Senators were in were in the middle of debate in their state Capitol chamber when a group of about two dozen protesters sprang from their seats in the overhead gallery. They began to scream "Voter rights are under attack! What do we do? Stand up and fight back!" Senate President Michael Ellis called a recess. The protesters then marched in laps around the Capitol, chanting and yelling. The protest was organized by National Nurses United. Organizer Pilar Schiavo says demonstrators are upset over a bill coming up later Wednesday in the state Assembly that would require Wisconsin voters to show photo identification at the polls and Governor Scott Walker's budget plan. The Senate resumed its debate after about 10 minutes.