The Oklahoma Legislature is constitutionally required to enact laws barring conflicts of interest for its members. The Oklahoma Ethics Commission currently makes recommendations to state legislators regarding ethical restrictions. In the event of a vacancy in the state legislature, the governor issues writs of election to fill such vacancies. The House of Representatives consists of 101 members, representing single-member districts that are drawn to reflect equal populations. Until the U.S. Supreme Court's 1964 ruling in the case of "Reynolds v. Sims", each of Oklahoma's 77 counties was guaranteed at least one House seat. Now though, the less-populated rural counties form multi-county districts. House District 61, for example, includes the entirety of Cimarron, Texas, Beaver and Harper counties as well as parts of the counties of Ellis and Woodward. The Senate consists of 48 members, representing single-member districts that are drawn to reflect equal populations. The political party with a majority of seats in the Oklahoma House of Representatives is known as the majority party; the next-largest party is the minority party. The Speaker of the Oklahoma House of Representatives is elected by a majority of members of the Oklahoma House of Representatives and is the nominee elected by the majority party caucus, unless a coalition of members of both political parties chooses a coalition candidate. Members of the minority party elect a caucus leader known as the minority leader. The speaker appoints committee chairs and other leadership roles; the minority leader appoints corresponding minority party roles such as "ranking members" of committees. The Oklahoma Constitution does not specify the duties and powers of the Speaker of the Oklahoma House of Representatives. They are instead regulated by the rules and customs of the house. Under Section 6 of Article VI of the Oklahoma Constitution, the speaker is third in line behind the lieutenant governor and president pro tempore of the state senate to succeed the governor. The speaker has a role both as a leader of the House and the leader of the majority party. They are the presiding officer of the House, but may appoint another member to serve as the presiding officer in their absence. The presiding officer sits in a chair in the front of the House chamber. The powers of the presiding officer are extensive; one important power is that of controlling the order in which members of the House speak. No member may make a speech or a motion unless they have first been recognized by the presiding officer. The presiding officer may rule on any "point of order" (a member's objection that a rule has been breached), but the decision is subject to appeal to the whole House.