Each house shall be the sole judge of the qualifications, elections, and returns of its members, and shall biennially choose its officers, including a permanent presiding officer selected from its membership, who shall be designated in the senate as President of the Senate, and in the house as Speaker of the House of Representatives. The senate shall designate a Secretary to serve at its pleasure, and the house of representatives shall designate a Clerk to serve at its pleasure. The legislature shall appoint an auditor to serve at its pleasure who shall audit public records and perform related duties as prescribed by law or concurrent resolution.