The primary will be held on September 13.

Governor Cuomo is still holding a big lead over Cynthia Nixon in the Democratic Primary.

That's according to a new Siena Research Poll released Tuesday.

Researchers surveyed Democrats who are likely to vote in the primary.

Cuomo has the backing of 60 percent of voters, down six points from Siena's first poll in March.

Nixon got support from 29 percent, a 10 point increase from the first poll.

The primary will be held on September 13.