Nader submits petition for Pennsylvania ballot HARRISBURG, Pa. Independent presidential candidate Ralph Nader beat a deadline today and submitted nominating papers bearing what campaign workers say are enough signatures to get the consumer activist on Pennsylvania's ballot. Nader's spokesman Justin McVay says the campaign has compiled about 50-thousand signatures, almost double the 25-thousand-697 signatures required for independent candidates in the November second election in Pennsylvania, a battleground state.Democrats, many of whom blame Nader's candidacy in 2000 for Al Gore's election loss to President Bush, say they plan to challenge the validity of Nader's petition.They say they fear that Nader could...