Nothing, from my point of view: but PPP might disagree: Tom Jensen’s noted with some alarm that the Dem/GOP numbers for this primary (885K to 736K) are a great deal closer than the Dem/GOP numbers for 2004 (1,242K to 662K), which was the last contested Senate primary*. As Tom said, “Those numbers are awfully close to each other for a state that’s overwhelmingly Democratic.”
They’re also too close together for comfort for any Democratic candidate (like, say, Alexi Giannoulias) hoping that the populace won’t notice that he’s more-of-the-same.
PS: Mark Kirk for Senate.
*No Senate elections in 2006, and Durbin ran unopposed in 2008.