(CNN) – Two days. Two very different polls in New York State's gubernatorial battle
A Siena College survey released Thursday indicates that New York State Attorney General Andrew Cuomo, the Democrat's nominee, holds a commanding 57 to 24 percent lead over Republican nominee Carl Paladino, a businessman and developer from Buffalo.
But a Quinnipiac University poll released Wednesday paints a very different story, with Cuomo holding a 49 to 43 percent advantage over Paladino.
So what gives?
The Siena Research Institute poll was of registered voters, while the Quinnipiac survey questioned the much narrower pool of likely voters.
"The difference between the polls may be due in part to the different base of voters who were surveyed, but that's probably not the only explanation," says CNN Polling Director Keating Holland. "One poll has nearly twice as many undecided voters as the other, and there may be a number of methodological differences that also account for the variation in the horse race numbers."
Cuomo is the son of former three-term New York Gov. Mario Cuomo. The winner of November's election will succeed Democratic Gov. David Paterson, who decided against running for a full term in office this year. The Lt. Gov. Paterson succeeded Elliot Spitzer as governor in 2008, after Spitzer stepped down following a prostitution scandal.
Paladino is a graduate of St. Bonaventure University and Syracuse University School of Law. He has built a real estate business worth millions and also remains active in his law practice.
The Siena College poll was conducted September 16-17, with 801 registered voters questioned by telephone. The survey's overall sampling error is plus or minus 3.5 percentage points.
The Quinnipiac University poll was conducted September 16-20, with 751 likely voters in New York State questioned by telephone. The survey's overall sampling error is plus or minus 3.6 percentage points.
Follow Paul Steinhauser on Twitter: @psteinhauserCNN