Three votes separate Rep. William San Bento Jr. and Democratic primary challenger Carlos Tobon after Tuesday’s election in House District 58 – and three provisional ballots have yet to be counted there.

As of 11:10 p.m. Tuesday, San Bento had 543 votes and Tobon had 540 votes, one of the tightest margins in Rhode Island. Tobon received six more votes than San Bento at polling places on Tuesday, but San Bento won by nine votes on the 45 mail ballots.

Douglas Hadden, a spokesman for Pawtucket Mayor Douglas Grebien, said voters submitted 11 provisional ballots in the House 58 race but only three were good. Those will be counted at 1:30 p.m. Thursday as part of a recount at the R.I. Board of Elections, and could result in a tied race if all three are for Tobon.

San Bento is a 10-term incumbent Democrat and deputy majority leader and was one of the few lawmakers who voted against last November’s pension overhaul. Tobon is a young activist who received the support of Treasurer Gina Raimondo, who campaigned with him Tuesday.

San Bento defeated Tobon in a three-way primary two years ago.