There have been questions about whether Biden is not liberal enough for a party that's moving to the left. I've long been suspect of that, and our latest poll shows why you should be, too.

We asked potential Democratic primary voters whether they were afraid the party would nominate too liberal of a candidate or one who was not liberal enough. The plurality, 49%, answered too liberal. A lower 41% said one who was not liberal enough.

That polling roughly lines up with what we see in the ideological breakdown of potential Democratic primary voters. Our poll puts liberals as 42% of the electorate, while moderates and conservatives are 57% of it.

Of course, it is Biden who does best among this moderate-to-conservative portion. He's at 29% among these voters. Sanders and Warren are at 12% apiece.

Biden's in third at 17% among liberals, but he benefits from Sanders (24%) and Warren (26%) splitting that vote. That is, they're splitting the smaller portion of the pie.

Indeed, Biden is the only candidate who is competitive at this point who has any real pull with the ideological lane that the plurality of voters belong to. If he were smart, he'd work to make the nomination fight more about ideology.