Byron York writes:

Massachusetts has not sent a Republican to the Senate in more than a generation, but voters might take this chance to restore some small measure of balance to a government that is perhaps too blue even for a very blue state.
“This country was built on debate,” says Diane Anderson, a Brown voter from Swampscott, Massachusetts. “And with the Democrats having 60 senators…just for that fact alone, if for no other reason, we should continue to have debate, and Brown will bring debate, being the 41st Republican.”
It’s a theme Brown has hit over and over. “This Senate seat does not belong to no one person and no one political party,” he said at a rally in Worcester Sunday. “It belongs to the people of Massachusetts.”
Finally, there is a growing sense that the Democratic party’s domination has led to widespread corruption. Three — yes, three — consecutives speakers of the Massachusetts state legislature, all Democrats, have been indicted. Other Democratic lawmakers are in trouble, as well. There has perhaps never been a better time for a Republican to argue that one-party rule has led to too much conformity and corruption.