• In this Jan. 3, 2012 file photo, votes are tallied during a caucus of precinct 42 near Smithland, Iowa. More than 40 years ago, a scheduling quirk vaulted Iowa to the front of the presidential nominating process, and ever since most White House hopefuls have devoted enormous time and money to a state that otherwise would get little attention.  (AP Photo/Dave Weaver, File)

    What to look for in Iowa’s presidential caucuses

    DES MOINES, Iowa (AP) — For more than a year, presidential candidates have fanned out across Iowa, shaking hands and posing for photos with voters in coffee shops, American Legion halls and libraries, often in towns so small that most Iowans have never heard of them.