Speaking of New Jersey, NJ.com has an excellent town-by-town flash map of the results.
http://www.nj.com/elections/towns/index.ssf?/str/primary/results.asp?frmchart=flashFun fact: On the Republican side, it appears that John McCain carried every single municipality in New Jersey but three (not counting Atlantic County, whose data is missing from the map):
Fieldsboro (Burlington County): Romney won with 38.1%. Fieldsboro made the news a few years ago when then-Mayor Buddy Tyler passed an ordinance prohibiting yellow ribbons from public property. Fieldsboro's population as of 2000 was 522.
Teterboro (Bergen County): Romney won with 60%. Teterboro, population 18, had 6 registered Republicans as of 2004. Teterboro is basically a town created around an airport.
Rockleigh (Bergen County): Romney won with 43.6%. Rockleigh has a population of 393.