CNN

By Eric Bradner, CNN
Monday, September 21, 2015 | Updated 8:21 AM ET

Hillary Clinton bouncing back in new poll
  • Hillary Clinton’s lead in the Democratic primary has expanded to 18 percentage points nationally
  • If Joe Biden doesn’t enter the race, Clinton’s lead would grow to nearly 2-to-1 over Bernie Sanders

Washington (CNN) — Hillary Clinton’s lead in the Democratic presidential primary race has grown — and if Vice President Joe Biden decides to stay out of the race, her numbers would rise even higher, a new CNN/ORC poll shows.

Clinton is backed by 42% of Democratic primary voters nationally, compared to 24% for Vermont Sen. Bernie Sanders, 22% for Biden and 1% for former Maryland Gov. Martin O’Malley.

That’s a marked improvement over an early September CNN/ORC poll that found Clinton leading Sanders, 37% to 27%, with Biden at 20%.

And Biden’s support comes almost entirely from Clinton’s camp. Without the vice president in the race, Clinton’s numbers climb by 15 percentage points, while Sanders’ increase by only 4 points — giving Clinton a nearly 2-to-1 lead at 57% to 28%, with O’Malley moving up to 2%.

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