Gov. Mel Carnahan (D) - Blue
Auditor Margaret Kelly (R) - Red
I'm not totally sure on the details, but the results were 57/40 for Carnahan in a state that went 48/41 for Clinton.
Essentially this appears to be one of the most recent times that a Democrat just swept most of the state in a Missouri state election. I could check the county results for the Attorney General's races (Jay Nixon being the AG from 1993 to 2009).
One split I use is a 15/100 split. 2/3rds of all people in Missouri live in 15 counties. The other 1/3rd live in the other 100 counties.
15/100 in map form
This is the same for the 1990 and 2000 censuses.
15/100 splits for the 2004 Gubernatorial election
Top 15: 53/46 McCaskill
Bottom 100: 61/38 Blunt
For the 2004 Presidential election
Top 15: 51/48 Kerry
Bottom 100: 64/36 Bush
And for this election
Top 15: 58/40 Carnahan
Bottom 100: 56/42 Carnahan
That's pretty much running the table.
And final map info for the people who don't know much about Missouri.
Kelly carried Southwest Missouri (which is a huge stronghold for the GOP), the traditionally Republican Gasconade county (by 276 votes/4.6%), Cape Giraudeau County (by 359 votes/1.3%), St. Charles County (by 1,424 votes/1.5%), and Warren County (by 195 votes/2.7%).
That's pretty much all.
Although Kelly did get closer than William Webster, who lost to Carnahan in 1992 by a 58/41 margin.
EDIT: