In the latest episode of CNN=Politics Daily, Jessica Yellin reports from Las Vegas about the leading Democrats' focus on economic issues on the eve of the caucuses in Nevada. John King reports from Spartanburg, South Carolina about the high stakes for the Republican presidential hopefuls in the first southern primary of the 2008 presidential race.
Plus, Bill Schneider digs deep into the results of a new CNN/Opinion Research Corporation national poll. Find out who has benefited bickering between Sens. Hillary Clinton and Barack Obama.
Finally, it's Friday and that means it's time for Trail Mix - a look at some of the week's most memorable moments from the campaign trail.
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–CNN Associate Producer Martina Stewart