When the voting clerks have received covers with window envelopes and cover envelopes for postal votes, they shall examine the covers and the envelopes to the extent that the vote reception in progress allows. In this examination, the voting clerks shall:

1. open the covers and count the envelopes;

2. check that the envelopes have not been opened since they were stuck down;

3. check that cover envelopes for postal votes satisfy the requirements on how such envelopes are to be prepared and, if this is the case, open the envelopes;

4. check that voters:

a) are included in the electoral roll for the electoral district,

b) have not delivered more than one window envelope or outer envelope for postal votes, and

c) have not voted at the polling station during the election day; 5. check that outer envelopes for postal votes satisfy the requirements on how such envelopes are to be prepared; and

6. open the window envelopes and outer envelopes for postal votes that satisfy the requirements under points 2, 4 and 5 and check that the envelopes contain outer envelopes for votes by messenger or vote envelopes, and that the envelopes satisfy the requirements on how such envelopes are to be prepared.