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Also check out Rand's post about what to do when the "wrong" page is ranking. This isn't the right use of a canonical tag in your situation. http://www.seomoz.org/blog/wrong-page-ranking-in-the-results-6-common-causes-5-solutions

Update - Google has crawled this correctly and is returning the correct, redirected page.  Meaning, it seems to have understood that we don't want any of the parametered versions indexed ("return representative link") from our original page and all of its campaign-tracked brethren, and is then redirecting from the representative link correctly. And finally there was peace in the universe...for now.  ;>  Tim