Donald Trump is photographed at the Iowa Freedom Summit in January 2015. Mark Peterson covered the 2016 presidential campaign and spent the past two years photographing candidates from both major parties. Ahead of Trump's inauguration on January 20, we look back at Peterson's pictures of the President-elect.
Trump greets people at a campaign rally in Lowell, Massachusetts, in January 2016. "When you're in the crowd, you saw how people felt about him and how energized they were by what he was doing," Peterson said about some of Trump's early rallies.
Faces of high-profile Republicans, including many presidential candidates, are held at the Conservative Political Action Conference in February 2015.
Trump holds a campaign rally in Carmel, Indiana, in May 2016.
Photographers get low as they shoot a Trump campaign rally in Plymouth, New Hampshire, in February 2016.
Trump hosts a veterans fundraiser in January 2016.
Protesters take part in an anti-Trump march outside the Republican National Convention in July 2016.
People watch a Republican debate at the RedState Gathering in Atlanta in August 2015.
Trump campaigns at a town hall in Rochester, New Hampshire, in September 2015.
A woman stops at Trump's star on the Hollywood Walk of Fame in June 2016.
A woman takes a photo with a Trump-themed phone case during a rally in Los Angeles in September 2015.
Trump arrives for jury duty in August 2015. He was dismissed in the afternoon after not being selected to participate in a trial.
A store sign in Virginia urges people to vote Republican in 2014.
A woman puts her hand over her heart -- and above a Trump button -- during a campaign rally in Lowell, Massachusetts, in January 2016.
A man is surrounded by balloons at the Republican National Convention in July 2016.
A cameraman films a large American flag outside the Republican National Convention.