Bayonne is a strongly Democratic city that hasn't backed a Republican since Thomas Kean in 1985.  Still, the major contenders in a non-partisan special election for Mayor this November -- all Democrats -- have internal polling that has caused them to avoid links to the Democratic candidate for President, Barack Obama.  Some Bayonne Democrats -- at least before the recent financial crisis -- have suggested that Republican John McCain could do well in this very blue collar municipality, where John Kerry beat George W. Bush 57%-43% in 2004.