with the advent of the nominal multi-party system in 1987, political parties have been able to muster enough candidates to fill their 12-person ticket. this means they have to join coalitions or alliances in order to present a full slate. if a slate is still not complete, guest candidates may be invited, even from rival slates. a guest candidate may not be compelled to join the campaign rallies of the slate that invited him/her. a party may even not include their entire ticket to a coalition slate, or assign their candidates to competing slates. a candidate may defect from one slate to another or be unaffiliated with any slate while the campaign is ongoing. the commission on elections uses the names of the political parties on the ballot.