Because "independent" means "even the democrats are too conservative for me".
That is very funny, and too likley true in too many cases!
“why is such a HUGE fraction of the states electorate ... INDEPENDENT?”
“Because “independent” means “even the democrats are too conservative for me”.”
(True, some independents in MA are ultraliberal Greens and such, and others are conservatives that can’t stand the local RINO GOP, but most are moderates that usually vote for the Republican in gubernatorial elections but more likely for tge Democrat in federal elections. The impressive thing abiut this special election is that Brown is getting huge margins among independents and, if Democrat turnout is as low as it well could end up being, he might just pull off the upset.