I'm sure most of you have seen the Labor Relations Institute's stuff, particularly their aggressively disseminated "Unions: 7 lies you must know" series (which is a pretty good read, actually).
Well, it's just come to my attention that they keep what they call a "Union Scoreboard" @ http://lrionline.com/current-scoreboard , a running tally of elections, strikes, decerts, etc. which is pretty good... better than anything I've seen on a pro-labor site!