During the 20th century, the role of the vice president evolved into more of an executive branch position. Now, the vice president is usually seen as an integral part of a president's administration and presides over the Senate only on ceremonial occasions or when a tie-breaking vote may be needed.
During the 20th century, the office of the vice president evolved into a more administrative role. Today, the vice president typically plays a key part in the president's administration and presides over the Senate only on formal events or when a vote is needed to break a tie.