HNS received an average of approximately 11 percent of the coverage, HSS received six percent and all other parties received less than five-percent coverage. The national television broadcasters air programs where all slates and candidates may talk about their platforms and organise debates. Paid promotion largely followed this pattern, as the HDZ and the SDP were two dominant parties in that field as well. The Organization for Security and Co-operation in Europe (OSCE) noted in its report that the largest parties reported their advertising spending below their actual value, and the largest proportion of expenditure was for television ads. Election silence is in force on the day of the elections and the previous day, ending at 7 in the evening as polling stations close and exit polls may be published after that time. Voting and appeals Polling stations are set up in public buildings throughout the country; voters may only vote at their assigned polling station (according to their permanent residence), but voters deployed abroad in the armed forces, voters on Croatian-flagged ships and imprisoned voters are allowed to vote elsewhere. Other voters residing in Croatia, but traveling abroad on election day may vote at Croatian diplomatic missions. Polling stations are open from 7:00 am until 7:00 pm, but all voters present at the polling stations at closing time are allowed to vote. Polling stations may be closed early if all registered voters have voted. Presidential election ballots contain a list of candidates verified by the State Electoral Commission, in alphabetical order. This entails the name and PIN of each candidate, and the names of political parties endorsing the candidate (or a note that the candidate is running as an independent). The names are preceded by ordinal numbers. Parliamentary election and European Parliament election ballots contain the name of the slate and the name of the person heading the list, in addition to candidates, who is not necessarily a candidate on the particular list, but may be included as a figurehead symbolizing specific political party or a coalition putting forward the list—usually head of the party of coalition at the national level. The lists are in alphabetical order and preceded by an ordinal number. Voting is done by circling the number associated with a particular candidate. Ballots marked otherwise (but positively indicating a candidate for which a vote is cast) are also considered valid. Blank ballots and ballots on which