MO Senate race remains atop the FiveThirtyEight.com rankings

Nate Silver of FiveThirtyEight.com ranks the 2010 races in order of their likelihood of changing parties -- Missouri remains at the top of their list:

Missouri (R-Open)
Steady as she goes for all-but-assured Democratic nominee Robin Carnahan, who begins with a slight lead in the polls, while Republican Roy Blunt is facing a nasty primary.

It's worth noting that Silver isn't assuming Sarah Steelman is out of the primary. Sarah has been quiet the past couple of weeks (maybe waiting to see how things shake out with the Q2 filings?) but did have an op-ed this weekend in the News-Leader.