"" Democratic presidential candidate, former Vice President Joe Biden speaks during an event in Fort Dodge, Iowa, two before the Iowa caucus. Al Drago/Getty Images Every four years, television news crews from New York to Los Angeles set up camp in the frigid cornfields of rural Iowa. The Iowa Caucuses, held in early February, represent the first chance for regular Americans from both major political parties to show support for a presidential candidate. The national press covers every minute of pre-caucus excitement as presidential hopefuls spread out across all 99 Iowa counties to shake hands at local diners and give stump speeches in elementary school gyms. As the earliest event of the primary election season — you know, the free-for-all that determines the nominees in each party — Iowa serves as a bellwether of national sentiment, helping to launch or sink candidacies and separate the wheat from the chaff — or in Iowa's case, the corn from the husk. But … [Read more...] about What’s the Difference Between a Caucus and a Primary?