How often does non-competition happen in Senate races?
According to Richard Winger, no Democrat will be on the November 2006 ballot for US Senate in Indiana. The only two candidates listed will be a Republican and a Libertarian. This is the eleventh time (and twelfth if Hillary Clinton will be unopposed in New York) in the last 16 years in which one of the major parties had not nominated in a US Senate race. The other instances have been: no Republican in Massachusetts 2002, Arkansas 1990 and Georgia 1990; no Democrat in Idaho 2004, Kansas 2002, Mississippi 2002, Virginia 2002, Mississippi 1990, and Virginia 1990.