As if the O/B campaign has been the epitomy of ethics and clear communication!

From the article: Letters returned as undeliverable can be compiled into "challenge lists" of unverifiable addresses and can be used to challenge voters' eligibility during early voting or on Election Day. The vote suppression technique is known as "vote caging."

The phrase "vote suppression" is woefully misleading and inaccurate - vote verification is closer to the truth, and that's something BOTH parties work hard to insure. Voter ineligibility is a problem in many places. For the honest voter, it's often a concept that's a joke with the "vote early and vote often" lines associated with certain political dynasties. Voter ineligibility also includes the umpteen thousand non-citizens who have registered to vote in spite of not being citizens, and who will appear at polling places - many of whom will vote in (and in some cases, swing) elections.

During the Bush/Gore FL recount, voter eligibility was challenged by both sides on numerous occasions.

Was this particular action by the Republican fundraiser correct or not? I'm not qualified to answer that, as one news article slanted in one direction is hardly a basis for an objective opinion. That's what the Office of the Federal Election Commission and Federal Election Assistance Commission (both are bipartisan by law) will decide. If there is any true chicanery, these commissions (please check them out) will get to the bottom of it.