Photos: Preparing for the Denver presidential debate

University of Denver students Zach Gonzales (L) and Dia Mohamed stand in for U.S. President Barack Obama, Republican Presidential candidate Mitt Romney during a dress rehearsal for the presidential debate at University of Denver in Denver, Colorado. It marks the first presidential debate with the two candidates as little more than one month remains before Americans head to the polls to elect their president for the next four years. Photo by Win McNamee, Getty Images.

University student Dia Mohamed (R) is given an oversized dark suit jacket as he stands in for President Barack Obama during rehearsal for the first presidential debate in the Ritchie Center at the University of Denver. Photo by Chip Somodevilla, Getty Images.

Workers make adjustments to the stage ahead of the first presidential debate at the University of Denver. Photo by Justin Sullivan, Getty Images.

A man waits for his bus near a roadside stall selling T-shirts featuring President Barack Obama's picture in Denver, Colorado. Obama and Republican challenger Mitt Romney are preparing to square off Wednesday night in the first of three prime-time debates. Photo by Jewel Samad, AFP/Getty Images.

University student Dia Mohamed (R) gets a wireless microphone put on his tie as he stands in for President Barack Obama during rehearsal for the first presidential debate in the Ritchie Center at the University of Denver. Republican presidential nominee and former Massachusetts Gov. Mitt Romney and President Barack Obama will square off on Wednesday for the first of three presidential debates before the November 6 election. Photo by Chip Somodevilla, Getty Images.

As members of the media prepare their television sets, University of Denver students Zach Gonzales (L) and Dia Mohamed stand in for U.S. President Barack Obama, Republican Presidential candidate. Photo by Win McNamee, Getty Images.

University of Denver students Zach Gonzales (L) and Dia Mohamed (R) stand in for U.S. President Barack Obama, Republican Presidential candidate Mitt Romney as Sam Garry (C) stands in for moderator Jim Lehrer during a dress rehearsal for the presidential debate at University of Denver. Photo by Win McNamee, Getty Images.

University of Denver students Zach Gonzales (L) and Dia Mohamed stand in for U.S. President Barack Obama, Republican Presidential candidate Mitt Romney during a dress rehearsal for the presidential debate at University of Denver in Denver, Colorado. It marks the first presidential debate with the two candidates as little more than one month remains before Americans head to the polls to elect their president for the next four years. Photo by Win McNamee, Getty Images.

Workers make last minute repairs ahead of the first Presidential Debate at the University of Denver. Photo by Justin Sullivan, Getty Images.

University of Denver student Sam Garry sits at the moderator's desk before a presidential debate dress rehearsal at University of Denver. Photo by Justin Sullivan, Getty Images.

T-shirts with pictures of President Barack Obama and Republican presidential candidate Mitt Romney at a roadside stall in Denver, Colorado a day ahead of the first presidential debate. Photo by Jewel Samad, AFP/Getty Images.

University of Denver students Zach Gonzales (R) and Dia Mohamed (L) are seen on a television monitor as they stand in as Republican presidential candidate Mitt Romney and President Barack Obama during a presidential debate dress rehearsal at the University of Denver on October 2. Photo by Justin Sullivan, Getty Images.

A sign for the the University of Denver, where the first presidential debates will be held. Photo by Doug Pensinger, Getty Images.

Road closure barricades sit on the side of a road to be used during the first presidential debate at the University of Denver. Republican presidential candidate Mitt Romney will square off against President Barack Obama in the first of three debates on October 3. Photo by Doug Pensinger, Getty Images.

Television satellite truck parked at the University of Denver. Republican presidential candidate Mitt Romney will square off against President Barack Obama in the first of three debates on October 3. Photo by Doug Pensinger, Getty Images.