While almost everyone focuses on the impact of Alito in regards to Roe, it is unlikely he will here anything like a complete ban case anytime soon. But what will be pressed, and soon, are cases regarding whether or not McCain-Feingold is a reasonable approach to election law. In the last two weeks, in a 9-0 decision, the USSC opened the door for a challenge to McCain-Feingold in regards to whetheror not corporate speech is protected, and if McCain-Feingold goes too far.
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In the last major supreme court review of McCain-Feingold, it was a 5-4, in which Kennedy, Renquist, Scalia and Thomas held that McCain-Feingold put unfair restrictions upon the speech of entities, etc.
Assuming that Alito "flips" the opinion of O'Connor, this would result in a monumental shift in our understanding of election law in upcoming years.
527 organizations would in effect be wholly redefined (in fact, they would have to be re-legislated, etc.) as well as a major move into the donor policies of those who back candidates.
Right now, looking at the lower court rulings and pending rulings, there appear to be several cases which could be seen by the Supreme Court within this summer session.
While it is unlikely this would have an impact in time for the 2006 election (though possible), this potential change would be a monumental shift in the 2008 elections.
Interestingly, the case which will face them stems from an organization advertising as to the filibuster of Alito himself.
http://www.firstamendmentcenter.org/...
In the end (the above article is from 1-16) the court decided 9-0 that this could be reviewed:
http://a257.g.akamaitech.net/...
This creates a unique situation in the next judicial cycle - and potentially for all future election cycles.