If you look at Kos' anaylsis he says the Kansas seat held by Sam Brownback is the sleeper race for 2004. Well... the Dems found their candidate in Joan Ruff, an attorney who immediately got Sebilius' endorsement.
http://www.mercurynews.com/mld/mercurynews/news/politics/7722838.htm
This is pretty important for 2 reasons. One is obviously to hold Republicans back in Senate seats. The other is too provide backup for Dennis Moores reelection campaign in the 3rd district. With Sebelius getting elected in 2002... The dems are strong and want to flext their muscle. This is a long shot in any case. But sending Sam Brownback home is at least a realistic dream now.