<Table> <Tr> <Td> Democratic </Td> <Td> Republican </Td> <Td> New Progressive Party </Td> <Td> Independent </Td> </Tr> </Table> <Tr> <Td> Democratic </Td> <Td> Republican </Td> <Td> New Progressive Party </Td> <Td> Independent </Td> </Tr> <P> The following is a list of incumbent governors of the states and territories of the United States as well as the mayor of the District of Columbia . Among the states, there are 34 Republicans, 15 Democrats, and 1 independent who hold the office of governor . Additionally, Ricky Rosselló is registered with the New Progressive Party of Puerto Rico but nationally affiliated as a Democrat . The mayor of the District of Columbia, Muriel Bowser, is a Democrat . </P> <P> Generally, the governor of a US state is the head of state and head of government or chief executive officer of their respective state . </P>

How many republican governors in the united states