There is a thoughtful piece in The American Thinker by Selwyn Duke, including this:
Read it all.
Of course, Coons' piece was written 25 years ago when he was 21 and will be excused by some as youthful indiscretion. But I'll make two points. First, the ability to profile properly is always necessary when choosing candidates, as the information you will have on them is always limited and managed. A politician certainly wouldn't admit to harboring Marxist passions; thus, in keeping with the maxim "The best predictor of future behavior is past behavior," the best yardstick we have for measuring Coons is actions and pronouncements taken/made before he had a vested interest in lying about his aims. (And wouldn't we instinctively apply this when judging someone with a neo-Nazi or KKK history? Would we give David Duke the benefit of the doubt many would give Coons?) Second, when profiling, know this: People who embrace communism but then truly renounce it generally become passionate rightists. Those who remain leftists usually haven't renounced anything but honesty about their intentions.
Christine O'Donnell may have flaws, but in a race between her and a left-winger, who was an avowed Marxist, I'll take Christine's flaws any time.