Veteran Kansas state Senator Mark Gilstrap bolted the Democatic Party December 4th for the GOP. After serving three terms in the state Senate, Gilstrap lost his reelection bid in the primary after facing major opposition from pro-abortion Catholic governor Kathleen Sebelius and the Democratic party of Kansas. The Gilstrap situation may have deep-sixed Sebelius' chances of being named vice-president because of Obama's courtship of Catholic voters. Gilstrap is a pro-life Catholic and the attack from his own party was too reminiscent of the treatment accorded to Pennsylvania Governor Robert Casey Sr. in 1992.
For some interesting articles on the Gilstrap situation check out these headlines:
Sebelius confounds Obama effort to appeal to Catholics
Kansas State Senator Switches From Democrat to Republican Over Abortion