In Pictures: Mike Pence Through the Years

Republican candidate Mike Pence, left, hugs his mother Nancy Pence following his victory speech in Anderson, Indiana, Nov. 7, 2000. Pence defeated Democrat Bob Rock for the seat in Indiana's 2nd Congressional District.

Indiana Gov. Mitch Daniels, right, talks about the flooding in Indiana to Rep. Mike Sodrel, R-Ind, left, Rep. Mike Pence, R-Ind., and Fred Armstrong, Mayor of Columbus, during a stop in Columbus, Jan. 12, 2005.

Rep. Mike Pence, center, speaks during a news conference on Iran, on Capitol Hill in Washington, D.C., June 19, 2009.

Rep. Mike Pence talks about health care during a news conference on Capitol Hill in Washington, D.C., Oct. 28, 2009.

Rep. Mike Pence, R-Ind., addresses the Conservative Political Action Conference (CPAC) in Washington, D.C., Feb. 19, 2010.

Rep. Mike Pence, center, surround by his family, left to right, son Michael, daughter Charlotte, his wife Karen and daughter Audrey as he kicked off his campaign for the Republican nomination for Governor of Indiana during a gathering of supporters in Columbus, Indiana, June 11, 2011. Pence promised to fight health care reform and federal climate change legislation. 

Indiana Republican gubernatorial candidate Mike Pence with his wife, Karen, wave to supporters at an Indiana Republican Party in Indianapolis, Nov. 6, 2012.

Mike Pence, left, is sworn in as Indiana's 50th governor by Chief Justin Brent E. Dickson during an inaugural ceremony at the Statehouse in Indianapolis, Jan. 14, 2013.

Indiana Gov. Mike Pence, right, hugs homeowner Patsy Addison in front of her storm damaged home in Kokomo, Indiana, Nov. 18, 2013. Dozens of tornadoes and intense thunderstorms swept across the U.S. Midwest, unleashing powerful winds that flattened entire neighborhoods, flipped over cars and uprooted trees.

Gov. Mike Pence and First Lady Karen Pence read to children at the Day Nursery daycare in Indianapolis, March 3, 2014.

Gov. Mike Pence speaks during the leadership forum at the National Rifle Association's annual convention in Indianapolis, Indiana, April 25, 2014.

Gov. Mike Pence speaks as his wife Karen, looks on at the opening ceremony for the Cops Cycling for Survivors fundraising bike ride in Indianapolis, July 11, 2016.

Republican presidential candidate Donald Trump, right, introduces Gov. Mike Pence, R-Ind., during a campaign event to announce Pence as the vice presidential running mate in New York, July 16, 2016.