105.455.  Six-month waiting period for certain elected or appointed officials — limited to compensated lobbyists — exemptions — definitions. — 1.  No person elected or appointed to the state senate, to the state house of representatives, or to the office of governor, lieutenant governor, attorney general, secretary of state, state treasurer, or state auditor who vacates the office, whether by resignation, expulsion, term limitation under Article III, Section 8 of the Constitution of Missouri, or otherwise, shall act, serve, or register as a lobbyist until six months after the expiration of any term of office for which such person was elected or appointed.

  2.  No person holding an office that required appointment by the governor and confirmation by the senate who vacates the office, whether by resignation, expulsion, or otherwise, shall act, serve, or register as a lobbyist until six months after the vacation of such office.

  3.  For purposes of this section, the prohibition contained herein shall apply only to lobbyists employed by a lobbyist principal for pay or other compensation in excess of reimbursement for expenses incurred.

  4.  The provisions of this section shall not apply to any person who acts, serves, or registers as a lobbyist for a state department or agency.

  5.  For purposes of this section, the terms "lobbyist" and "lobbyist principal" shall have the same meanings given to such terms under section 105.470.