According to a survey of likely caucus-goers by Quinnipiac University, 49% back Sanders, 44% are in favor of Clinton and 4% back former Maryland Gov. Martin O’Malley. This is the end of a months-long lead for Clinton in Iowa, the first state in the nominating process for the presidency. Clinton led Sanders by 11 percentage points in the last Quinnipiac poll, which was released in mid-December.

A divide among Iowa voters highlights a growing gender gap between the candidates: Men back Sanders 61% to Clinton’s 30%, while women back Clinton 55% to Sander’s 39%. But there was some good news for Clinton, who has made electability a key part of her campaign argument.

The survey was conducted Jan. 5-10 by polling 492 likely Iowa caucus participants with a margin of error of +/- 4.4%.

This article was originally published on Time.com.