Grab the chips and salsa! After all the debates, the ads, the calls, the push polls, the charges and counter-charges, the first-in-the-nation contest is finally here. You might think from the coverage that it's do or die tonight for candidates from both parties. But a win in the Hawkeye State isn't necessarily the key to the Democratic or Republican Party nomination -- or the White House. — Jonathan Capehart
Map by Nathaniel Vaughn Kelso. Jonathan Capehart is a member of the editorial page staff.