This is WEEKEND EDITION from NPR News. I'm Scott Simon.
Be careful what you wish for. After John McCain so quickly clinched the Republican presidential nomination the last time around, the party changed its rules with an eye to extending their primary season, reaping public interest for months like the long Democratic primary season of 2008. You might wonder how they feel about that now. John McCain himself has dubbed this campaign the nastiest he's ever seen - akin to watching a Greek tragedy.