Until 1987: Democratic
1987 - 1999: Republican
1999 - 2001: Reform
2001 - 2009: Democratic
2009 - 2011: Republican
2011 - 2012: Independent
2012 - Present: Republican
Until 1987: Democratic
1987 - 1999: Republican
1999 - 2001: Reform
2001 - 2009: Democratic
2009 - 2011: Republican
2011 - 2012: Independent
2012 - Present: Republican