Just to be nitpicky, here's part of one answer:
Money has always been a factor in politics, but we are seeing something new in the no-holds barred flow of seven and eight figure checks, most undisclosed, into super-PACs; they fundamentally threaten to overwhelm the political process over the long run and drown out the voices of ordinary citizens.
I would have used a colon there instead of a semicolon (another of my pet peeves). His other uses of the semicolon seem to be correct to me.
Any other thoughts?