This time lapse shows how historic Constitution Hall in Washington was transformed for CNN's Republican National Security Debate. The candidates take on national defense, the economy, international relations and terrorism issues at 8 p.m. ET. Stay tuned for the AC360 post-debate show at 10 p.m. ET.
Filed under: 2012 Election
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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