Here's a look at the life of Rick Santorum, former Pennsylvania congressman.
Birth date: May 10, 1958
Birth place: Winchester, Virginia
Birth name: Richard John Santorum
Father: Aldo Santorum, a psychologist
Mother: Catherine (Dughi) Santorum, a nurse
Marriage: Karen (Garver) Santorum (1990-present)
Children: Isabella, 2008; Patrick, 2001; Peter, 1999; Sarah, 1998; Gabriel, born and died in 1996; Daniel, 1995; Richard Jr., 1993; Elizabeth, 1991
Education: Pennsylvania State University, B.A., Political Science, 1980; University of Pittsburgh, M.B.A., 1981; Dickinson School of Law, J.D., 1986
Religion: Roman Catholic
Member of the "Gang of Seven," a group that exposed and condemned scandals in congress, when in the House of Representatives.
Founded the Congressional Working Group on Religious Freedom.
Known for spearheading and helping to pass the welfare reform bill and a ban on partial-birth abortion.
1981-1986 - Administrative Assistant to Pennsylvania State Senator J. Doyle Corman.
1986-1990 - Associate attorney at Kirkpatrick & Lockhart in Pittsburgh.
January 1991-January 1995 - US Representative for the 18th District of Pennsylvania. Is re-elected in 1992.
January 1995-January 2007 - Republican Senator from Pennsylvania. Is re-elected in 2000.
1996 - The Santorums' son, Gabriel, is born prematurely and only lives for two hours. Santorum's wife Karen writes a book about the experience, "Letters to Gabriel: The True Story of Gabriel Michael Santorum."
2001-2007 - Chairman of the Senate Republican Conference.
November 2006 - Is defeated in his Senate race by Democrat Bob Casey.
2007-May 2008 - Management consultant at law firm Eckert Seamans Cherin & Mellott, LLC, in Washington, DC.
2007-May 2011 - Political contributor at Fox News.
2007-June 2011 - Senior Fellow at the Ethics and Public Policy Center.
2008 - Santorum youngest child, Isabella, is born with Trisomy 18, a rare genetic disorder.
March 2, 2011 - Fox News suspends Santorum's contract for 60 days and gives him a May 1, 2011 deadline to decide whether to run for president, or have his contract terminated.
April 13, 2011 - Announces that he has formed a presidential exploratory committee, but does not publicly declare his candidacy.
May 5, 2011 - Fox News ends association with Santorum after he doesn't respond by the May 1 deadline regarding his decision on seeking the 2012 Republican presidential nomination.
June 6, 2011 - Launches his presidential campaign in Somerset County, Pennsylvania.
February 15, 2012 - Releases his last four years of tax returns showing he earned more than $3.6 million.
April 10, 2012 - Suspends his presidential campaign.
April 28, 2014 - Publishes his book, "Blue Collar Conservatives."
February 10, 2015 - Santorum and wife Karen publish a book about their daughter entitled "Bella's Gift."
May 27, 2015 - Santorum launches a campaign for the GOP presidential nomination.
January 18, 2017 - CNN Worldwide President Jeff Zucker announces Santorum will join CNN as a political commentator.
March 25, 2018 - In response to students protesting for gun control legislation, Santorum remarks "How about kids instead of looking to someone else to solve their problem, do something about maybe taking CPR classes or trying to deal with situations when there is a violent shooter that you can actually respond to that." A few days later, Santorum says misspoke "in using the term CPR."