Donald Lee Nickles is an American political leader who was a United States Senator from Oklahoma from 1981 until 2005. He is a member of the Republican Party.
Encouraged by then-U.S. Senator Dewey F. Bartlett, Nickles ran for the Oklahoma State Senate in 1978 and won. After two years in the State Senate and displeased by the policies of the Carter Administration, Nickles ran for the United States Senate in 1980 to succeed Republican Henry Bellmon.
At the age of 31, he was the youngest Republican ever elected to the United States Senate. Nickles quickly rose in the Senate Republican Leadership, serving as Chairman of the National Republican Senatorial Committee in the 101st Congress, Chairman of the Republican Policy Committee in the 102nd, 103rd, and 104th Congresses, and Assistant Republican Leader from 1996-2003. After being term-limited out of the Assistant Leader position, Nickles served in the 108th Congress as Chairman of the Senate Budget Committee. Nickles was re-elected in 1986, 1992, and 1998, and was the senior senator of Oklahoma from 1994 to 2005. In 2003 he announced that he would not run again in the 2004 election.
Nickles went on to found The Nickles Group, a government consulting group in Washington, D.C.
Source: Wikipedia
http://en.wikipedia.org/wiki/Don_Nickles