Iowa Caucuses Set to Begin Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Republican presidential candidate former U.S. Senator Rick Santorum (R-PA) kisses his wife after fielding a question about the death of their son during a campaign rally in Newton, Iowa. ( Scott Olson/Getty Images / Getty ) Produced by PRI and WNYC