The lieutenant governor is a constitutional officer of the Commonwealth of Pennsylvania. The lieutenant governor is elected every four years along with the governor. Michael J. Stack III is the incumbent lieutenant governor. The lieutenant governor presides in the Senate and is first in the line of succession to the governor; in the event the governor dies, resigns, or otherwise leaves office, the lieutenant governor becomes governor.
The office of lieutenant governor was created by the Constitution of 1873. As with the governor's position, the Constitution of 1968 made the lieutenant governor eligible to succeed himself or herself for one additional four-year term .
As of January 2015[update], six former lieutenant governors were alive, the oldest being Robert C. Jubelirer (2001–2003, born 1937). The most recent death of a former lieutenant governor was that of Ernest P. Kline (1971–1979), on May 13, 2009.
From 1777 to 1790 the executive branch of Pennsylvania's state government was headed by a Supreme Executive Council consisting of a representative of each county and of the City of Philadelphia. The Vice President of the Council—also known as the Vice-President of Pennsylvania—held a position analogous to the modern office of Lieutenant Governor. Presidents and Vice-Presidents were elected to one-year terms and could serve up to three years—the full length of their regular term as Counsellor. Ten men served as Vice-President during the time of the Council's existence.