The Nobel Peace Prize 2002 was awarded to Jimmy Carter "for his decades of untiring effort to find peaceful solutions to international conflicts, to advance democracy and human rights, and to promote economic and social development"."- quoted from the Nobel peace prize website
Before presidency he was the democratic governor of Georgia
Became president in 1976
After Carter Lost his second presidential election against Ronald Reagan, he conducted an active peace and mediation campaign which sometimes seemed to run counter to official US policy.