Newtown's Democratic and Republican Town Committees have nominated slates of candidates for November's municipal elections.  Neither party have nominated a First Selectman candidate.  Incumbent Democrat Dan Rosenthal is petitioning his way onto the ballot as a third-party candidate.  Noting that he has not had a rift from his party, Rosenthal is running on the Serve America Movement line.  He made the announcement a week before Democrats and Republicans gathered to nominate candidates.