Just days before crucial early voting is set to begin, Bernie Sanders has opened his widest lead yet over Hillary Clinton in New Hampshire, according to a new CNN/WMUR poll.

The survey, which was mostly conducted before Sunday night’s Democratic debate in South Carolina, shows the Vermont senator now leading the former secretary of state by a stunning 27 points, with 60 percent to her 33 percent.

Sanders’ support has grown by 10 points since early, December when the same poll found 50 percent of Democratic voters supported him over Clinton’s 40 percent.

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The new poll also shows that New Hampshire Democrats’ are solidifying their views on the 2016 presidential race, with 52 percent saying they have definitely decided who they’ll support. That’s up from 36 percent in early December. Among those voters, Sanders holds an even broader lead, with 64 percent to over Clinton’s 35 percent.

But the Vermont senator’s support is largely dependent on those who are less likely to vote in New Hampshire primaries — younger voters and those who may not be registered Democrats.

Other recent New Hampshire polls show the candidates in a virtual tie, with Sanders leading by a few percentage points. The former secretary of state hasn’t led the polls in the Granite State since last summer.