By Anthony Salvanto, Jen De Pinto, Sarah Dutton, Fred Backus

Just days before the Super Tuesday "SEC" Democratic primary contests, Hillary Clinton holds at least a 20-point lead in three of the key states -- Georgia, Texas, and Virginia. Majorities of Democratic primary voters in these states have made up their minds as to whom to vote for.

As the race shifts to the South, the Democratic contest will now feature states with larger percentages of African American voters - especially in Georgia, where they made up just over half of those voting in the Democratic primary in 2008. This year, while white voters are somewhat divided between Clinton and rival Bernie Sanders in these three states, three in four black voters are supporting Clinton.

Sanders maintains his a large lead among voters under thirty, but Clinton is beating him among voters between 30 and 44 in all three states, an age group that Sanders won easily in Iowa, New Hampshire, and Nevada. Clinton has an even larger lead among voters 45 and older. Men are divided between the two candidates, but Clinton has a strong lead among women.

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Most voters think both candidates understand people like them, but they have more confidence in Sanders when it comes to favoring regular people over big donors, and Sanders is generally seen as the more principled candidate. Honesty is an even bigger concern when it comes to Hillary Clinton: though two-thirds of Democratic voters say Sanders is honest, just over a third of voters say the same for Clinton. Even among black voters, less than half describe her as honest.

But Clinton is generally seen as more qualified to be president -- particularly in Georgia, where less than half of Democratic voters view Sanders as qualified. As a result, Clinton is seen as better able to handle a number of issues, including improving race relations in America, gun policy, being commander-in-chief, health care, and standing up on to a Republican Congress. In Texas and Virginia, Sanders does better on fixing income inequality, but in Georgia -- with its higher proportion of black voters -- Clinton wins on this issue as well.

Clinton and Sanders supporters have different priorities: most Clinton supporters are backing her because they think she gives the Democrats a good chance to win in November, while Sanders supporters are more concerned with accomplishing a progressive agenda. Clinton supporters tend to want to continue the policies of Barack Obama, while Sanders supporters overwhelmingly want to switch to more progressive policies than that of the current administration.

Looking ahead to the general election, Clinton may have some trouble garnering the enthusiasm of Sanders supporters should she win the nomination. Sanders supporters are more likely than Clinton supporters to say the Democratic Party doesn't represent them, and less than half of Sanders supporters are even somewhat enthusiastic about Hillary Clinton, though most would still vote for her.

You can find the full results and methodology below and here.