According to the Code of Good Practice in Electoral Matters, the votes should preferably be counted at the polling station immediately after polls close, rather than in special counting centres (CDL-AD(2002)023rev2-cor, Expl. Report para 45). This has the advantage of providing quick results for the polling station and avoids the security risks of transporting ballot boxes and electoral documents. In some countries, however, sealed ballot boxes are transported to special counting centres at the constituency level (e.g. Iceland) or national level (e.g. Malta). In the case of Iceland, the mixing of ballots from different polling stations before counting aims to ensure the secrecy of the vote, given the large number of polling stations with fewer than 100 registered voters.