Age: 53

Background: Three-term state representative for Kalamazoo. Executive director of Kalamazoo Pregnancy Care Center since 1996. Chairman of SHALOM, a nonprofit adult foster care agency. Served on Kalamazoo County Board of Commissioners from 2000 until 2002. Vice chairman of state House Government Operations committee.

Web site: www.jackformichigan.org

Democratic

Carl Levin

Age: 74

Background: Incumbent. First elected to U.S. Senate in 1978. Detroit City Council member from 1969 until 1978, serving as president from 1974 until 1977. Chairman of U.S. Senate Armed Services committee and Permanent Subcommittee on Investigations. Member of five U.S. Senate committees.

Web site: www.carllevin.com

Green

Harley G. Mikkelson

Age: 61

Background: Two-time Green Party candidate for U.S. House of Representatives. Vice chairman of Green Party of Michigan in 2007. Local liaison of Green Party of Michigan in 2008.

Web site: www.harleymikkelson.com

U.S. Taxpayers

Michael N. Nikitin

Age: 53

Background: Ran for Michigan Senate in 2006. Has been a quality control manager, plant manager and business consultant for his 30-year professional career.

Web site: www.mikenikitin.com

Libertarian

Scotty Boman

Age: 46

Background: Ran for Michigan state representative in 1994. Vice chairman of Libertarian Party of Michigan from 2005 until 2006 and chairman from 2006 until 2007.

Web site: www.boman08.com

Natural Law

Doug Dern

Age: 47

Background: Ran for U.S. Senate in 2002. Self-employed lawyer, head of Doug Dern & Associates, a Michigan-based law firm.

Web site: None

Green

Aaron Stuttman

Age: 51

Background: Ran for same seat in 2006. Owner of Jian Construction and Zen-Tastic Massage. Earned certificate of achievement for massage from Lansing Community College in 1991. Activist and volunteer for several organizations.

Web site: www.stuttmanforcongress.com

U.S. Taxpayers

George M. Zimmer

Age: 66

Background: Ran for Michigan state House of Representatives in 2004. Former technician with U.S. Air Force and Wilson & Company. Former foreman for Wisconsin Steel Works. Former air traffic controller with Federal Aviation Administration.

Libertarian

Will Tyler White

Age: 58

Background: Ran for same seat in 2004. Chairman of Capital Area Libertarian Party of Michigan from 1998 until 2003. Treasurer of Libertarian Party of Michigan from 2003 until 2006.

Web site: www.willtylerwhite.org