A new poll shows Democrat Jon Ossoff holding a narrow lead on Republican Karen Handel in Georgia’s 6th congressional district runoff election for the vacant U.S. House of Representatives seat.

The poll was released by a Democratic polling firm and shows Ossoff ahead of Handel by one point (48-47). It was performed by Anzalone Liszt Grove Research from April 23-26 and asked 590 likely voters in the runoff election their opinion on the race.

Five percent of voters considered themselves “undecided” and there was a margin of error of four percent.

The election is to replace former U.S. Rep. Tom Price, who was selected by President Donald Trump‘s and was confirmed as the secretary of the Department of Health and Human Services.

Take a look at the full results of the poll in the document below:

Georgia 6th Congressional Poll by Chris on Scribd

The June 20 runoff election is taking place because none of the people in the special election’s 17-candidate field received over 50 percent support when voters went to the polls in the first round April 18.

Ossoff placed first out of all candidates in the race with 48.10 percent, and Handel was second with 19.78 percent. Because there were 11 Republicans in the first round of voting, many expect those conservatives who voted for candidates other than Handel to give her their support during the runoff.

The new poll said that “part of Ossoff’ success in earning 48 percent in the April special election was his ability to drive turnout among voters who do not typically vote in special elections or midterms.”

It said that just 25 percent of those who voted April 18 election also voted in 2016 and didn’t vote in 2014. Ossoff currently holds a lead of 12 points over Handel with those voters, the internal poll found.

The campaign in the fifth district has garnered much national attention, with Trump raising funds for Handel at fundraisers and bashing Ossoff with a robocall.

Former presidential candidate and Sen. Bernie Sanders (D-Vermont) notably endorsed Ossoff in the race just one day after saying he wasn’t sure if he would label Ossoff as a “true progressive.”