(CNN) Voters have voted!

With the Iowa caucuses and New Hampshire primary now behind us, the shape of the 2020 Democratic field is both a) clearer and b) different.

The biggest change is that we now have a clear Top 2, in the form of Vermont Sen. Bernie Sanders and former South Bend, Indiana, Mayor Pete Buttigieg, who took the top spots in each of the first two contests.

So who's the front-runner? We say Sanders for now -- for a few reasons.

First, Sanders has some demonstrated appeal among black and Latino voters, who will start to have a much bigger say in the nomination fight beginning with the Nevada caucuses on February 22. Buttigieg remains a wholly unproven commodity among those influential voting blocs. He may benefit from momentum gathered in the first two states but that remains to be seen.

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