President Obama and Mitt Romney face off in the first of three presidential debates tonight. The candidates will tackle domestic issues like the economy, Medicare and the federal budget. The president has been in Las Vegas this week preparing for the debate which takes place in Denver. Meanwhile, Ann Romney and Florida Sen. Marco Rubio visited Las Vegas on Tuesday to stump for Mitt Romney. We'll preview the presidential debate and look at the other important political stories leading to the election.

 

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