Iowa is still unsure who it will vote for — just like the rest of the US

Democratic presidential candidate Senator Bernie Sanders holds a campaign event at La Poste in Iowa this week. Chip Somodevilla / Getty Images

The week before Iowa, a predominantly rural state in Midwestern United States, kicks off the presidential primary season, its rolling plains and cornfields are covered in snow and the political debate is heating up.

On February 3, this overwhelmingly white and sparsely populated state of barely three million will fire the starting gun for…