They're the frontrunners & certainly favored to win nomination and Dems can win either race.
You do understand Atlas has a quote button, yes?
And yes, at this exact point they are hypothetically "favored" because of their standing in polls, but the entire betting industry and most mainline political geeks and PoliSci's disagree that they are certain to take the nomination a year from now when all voters across the nation actually head to the primary voting booths in those weeks.
Ah, yes, when have bettors ever failed us before? And when was the last time the geeks promoted a total loser as the next yuuuugge thing only to be proven wrong? Most people fail at managing money and the pros are incredibly out of touch.