Rick Lazio's once 20-point lead over Carl Paladino among Republican voters has shrunk to thirteen points, according to a new poll from Siena.

Lazio, the GOP nominee leads Paladino, an upstate businessman who petitioned his way onto the ballot, 43-30 percent. That's down from the 40-20 percent lead Lazio had back in July.

Cuomo leads each of them in head-to-head match-ups, and in three-way matches.

Cuomo - 60
Lazio    - 26

Cuomo - 60
Paladino- 27

Cuomo                         - 56
Lazio [Republican]        - 19
Paladino [independent]  -12

Cuomo                        - 56
Lazio [Conservative]     - 16
Paladino [Republican]  - 14

One factor in the race could be the candidate's stance on the mosque and cultural center proposed near Ground Zero.

Twenty-two percent of voters say a candidate's position on this issue will have a "major impact" on their decision of whom to support. Thirty-seven percent say the issue will have "some effect," on their decision. Thirty-nine percent says it won't be a factor at all.

Sixty-three percent of voters say they oppose it, compared to 27 who support it. Interestingly, 64 percent say the developers have a right to build the project at its current location. Twenty-eight say there is no legal right.