There are a couple of primaries today.  Registered Republicans in Southbury are at the polls to chose a candidate for First Selectman.  Incumbent First Selectman Jeff Manville is seeking his third term.  Jennifer Naylor, a member of the Board of Selectmen, was nominated by the GOP.  The winner will face Democratic challenger Rich Boritz in the November election.  In Ridgefield, voters registered with the GOP are being asked to narrow down 6 candidates for the Board of Ed to 5 to appear on the November ballot.  In Oxford, there's a Democratic primary for First Selectman and Selectman.