1988 - Serves as a campaign adviser for the presidential campaign of George H.W. Bush.
1993-1997 - Serves as the chairman of the Republican National Committee. During his two terms, Republicans win control of both the House and the Senate, for the first time in four decades.
1996 - His book: "Agenda for America: A Republican Direction for the Future," is published.
November 4, 2003 - Is elected governor of Mississippi and becomes only the second Republican governor elected since 1876, during the Reconstruction era.
January 13, 2004-January 10, 2012 - Republican Governor of Mississippi.
November 6, 2007 - Is re-elected governor.
2009 - Becomes chairman of the Republican Governors Association after South Carolina Governor Mark Sanford resigns.
January 11, 2011 - During his final State of the State speech as governor, Barbour proposes that a civil rights museum be built in Mississippi.
April 25, 2011 - Announces he will not run for president in 2012.
January 10, 2012 - Mississippi Secretary of State documents show that in his last days in office, Barbour granted full pardons for 199 people, including 14 convicted murderers.
January 2012 - Barbour joins the Mississippi law firm Butler, Snow, O'Mara, Stevens and Cannada, PLLC, and returns to the lobbying firm he co-founded in 1991, renamed BGR Group.
January 11, 2012 - Judge Tomie Green issues an injunction temporarily blocking the release of 21 inmates pardoned by Barbour.
March 8, 2012 - In a 6-3 ruling, the Mississippi Supreme Court finds Barbour's pardons "may not be set aside or voided by the judicial branch."