Actually I think you're on to something...

The liberal Democrats would have every reason to attempt to assassinate all three of those men, Wellstone because every poll had him losing to Coleman, (and see how well the change worked in NJ). And considering the frustration the Liberals had at both Dashle and Leahy for failing to convert the revealed truth to actual political firepower, they were toast. (And the Postal Union was late with their annual contribution to the Party, so they dusted a couple to get the ante up.)   

And hey, look what happened to Ron Brown two weeks before he was to be indicted; the Secretary of Commerce sent on a special trip to Bosnia? Yeah, toadfrog, I think you're right, there is a trend here...