The Montana State Legislature is the state legislature of the U.S. state of Montana. It is composed of the 100-member Montana House of Representatives and the 50-member Montana Senate. The Montana Constitution dictates that the legislature meet in regular session for no longer than 90 days in each odd-numbered year. The primary work of the legislature is to pass a balanced biennial budget which must then be approved by the governor. If the governor vetoes a bill, the legislature may override the veto by a two-thirds vote. The Montana State Legislature meets in the state capitol in Helena.