The first one says "Towns with more Republicans generally saw higher voter turnout." But the two towns they site as having the highest percentage of Republicans have just 27%. I guess it is MA after all. I'd like to see info with number of Republicans and not just percentage.
The second graph says "areas with higher proportions of Democrats tended to have lower turnouts". They list Fall River, Springfield and Lawrence as the outliers proving this (with 5X% Dems and 3X% turnout. But Boston (56% D and 43% turnout) and Cambridge (50% D and 54% turnout) probably dwarf the number of votes.
Graphs 3 and 4 show the same data inverted. "Towns with more independent voters tended to support Brown...and the reverse was generally true for...Coakley". There's a lot more deviation in this but the bulk is 60% Ind were 60% Brown.
The New York Times has a better maps of Results and Analysis. It shows not just percentage but number of votes by town. Coakley won 4/5 of the 100,000 person cities (Boston, Worcester, Springfield and Cambridge but not Lowell) but not by enough of a margin to make up for all the towns in the middle and south of the state. My town was 67% Coakley.
MA has about 6.5 million people and 4 million registered voters (as of Oct 2004):
Here are various maps showing economic, educational and other data.