A state employee may
(1) be a member of a national, state, or local political party;
(2) take part in a political campaign;
(3) express political opinions; however, while engaged on official business, a state employee may not display or distribute partisan political material;
(4) register party preference;
(5) serve as a voting or nonvoting delegate to a party convention;
(6) be appointed, nominated, or elected to nonpartisan public office in a local government unit; and
(7) make contributions to a political party or a candidate for public office.