Hillary Clinton would defeat Ted Cruz and trounce Donald Trump in a hypothetical head-to-head general election matchup, but she would lose to Marco Rubio or Ben Carson, a new NBC News/Wall Street Journal poll finds.

Clinton, who leads the Democratic primary field by nearly 20 points, would have a strong advantage over Trump with independent voters but would be bested by the three other Republicans with the important swing group.

The poll, conducted Dec. 6-9, shows Clinton getting the support of 56 percent of Democrats, compared to 37 percent who back Sen. Bernie Sanders of Vermont and 4 percent who back former Maryland Gov. Martin O’Malley.

Read the article “NBC Poll: Clinton Would Trounce Trump, Runs Neck and Neck with Rubio, Carson, Cruz” on nbcnews.com.