In the mailing address, all elected officials are The Honorable.

Greeting Within the Correspondence:
For members of the State Assembly and Members of Congress, the greeting should be Dear Mr., Mrs., or Ms._____.
For the Governor, the greeting should be Dear Governor or Dear Governor _________. 
For both State and Federal Senators, the greeting should be Dear Senator ________. 
For the NYS Regents, the greeting should be Dear Regent __________.