The Nevada Senate is the upper house of the Nevada Legislature, the state legislature of U.S. state of Nevada, the lower house being the Nevada Assembly. It currently (2012–2021) consists of 21 members from single-member districts. In the previous redistricting (2002–2011) there were 19 districts, two of which were multimember. Since 2012, there have been 21 districts, each formed by combining two neighboring state assembly districts. Each state senator represented approximately 128,598 as of the 2010 United States census. Article Four of the Constitution of Nevada sets that state senators serve staggered four-year terms.