It's the second in charge behind the governor of a state. Similar to the President and Vice President.
That would be the "Lieutenant Governor".
The current Lieutenant Governor of Ohio is Mary Taylor. Taylor assumed office as Lieutenant Governor of Ohio on January 10, 2011.
Because the Governor and Lieutenant Governor are elected by separate ballot it often happens that they represent different Political Parties as is the case in Georgia today. They have a Republican Governor and a Democratic Lieutenant Governor.
lieutenant governor
People do not vote for a Lieutenant Governor. He or she is selected by the candidate running for Governor.
State voters elect the lieutenant governor. In most states, the governor and lieutenant governor are elected together on a single ticket, but other states vote for lieutenant governor separately, meaning he or she may be from a different party than the governor.
Brad Owen is the current Lieutenant Governor of Washington State.
LIEUTENANT GOVERNOR JIM CAWLEY was instated as the 32nd Lieutenant Governor of the Commonwealth of Pennsylvania on January 18th, 2011.
The lieutenant governor is sometimes referred to as the deputy governor or the vice governor.
According to the Idaho Lieutenant Governor's website (refer to the link, below), the Lt. Gov. would take over as Governor in the event that the Governor leaves the State or is incapacitated or worse.
The Lieutenant Governor of Ontario is deemed to have no party.
Lieutenant Governor of Massachusetts is Tim Murray .