The Senate of Virginia is the upper house of the Virginia General Assembly. The Senate is composed of 40 senators representing an equal number of single-member constituent districts. The Senate is presided over by the lieutenant governor of Virginia. Prior to the American War of Independence, the upper house of the General Assembly was represented by the Virginia Governor's Council, consisting of up to 12 executive counselors appointed by the colonial royal governor as advisers and jurists. The lieutenant governor presides daily over the Virginia Senate. In the lieutenant governor's absence, the president pro tempore presides, usually a powerful member of the majority party. The Senate is equal with the House of Delegates, the lower chamber of the legislature, except that taxation bills must originate in the House, similar to the federal U.S. Congress. The 40 senatorial districts in Virginia elect their representatives every four years on the Tuesday following the first Monday in November. The last election took place in November 2019. There are no term limits for senators. The Senate also employs 36 pages (ages 13–14) to help with daily tasks during each general session in a full-time residential program of high regard. The Senate of Virginia was created by the 1776 Constitution of Virginia, and originally consisted of twenty-four members. Along with the House of Delegates, the Senate comprised a new bicameral legislature designed to replace the colonial Virginia House of Burgesses, which formally dissolved on May 6, 1776. The Senate replaced the legislative functions of the appointed Virginia Council of State. Pursuant to the original Virginia Constitution, the Senate was only permitted to file amendments, while the House of Delegates had the power to propose bills. Accordingly, the Senate had far less power than the House, until the revised Virginia constitution of 1851 allowed the Senate to propose new laws. In the 2007 elections, the Democratic Party reclaimed the majority in the Senate for the first time since 1995, when the Republican Party gained a 20–20 split.