nobody votes twice, as they are still assigned to a particular polling station close to their registered place of residence, they must vote with what are referred to as double envelopes. The envelope containing their ballot slip is placed into a larger envelope which also contains their identifying information so that it can be checked against the list of voters at their assigned polling station to see if they were marked as having voted there before their double envelope vote is counted. Aside from double envelope voters, all citizens may vote only at their registered polling place. Once a regular polling station closes, officials at the polling station count the votes and send a document recording the results and the ballot box with the ballot slips inside it to one of 25 vote counting centers nationwide, where the documents are checked for any irregularities, then entered into the Central Elections Committee's software system, a closed system not connected to the Internet, and rechecked. Any irregularities detected by the software are brought to the attention of a district court judge present at the station throughout the vote counting process, who adjudicates all such cases. The results are published by the Central Elections Committee. The double envelope votes are brought to the Knesset and counted after all other votes have been counted. One team checks the identification details in the outer envelope against the list of voters at the person's assigned polling station to see if their name has been crossed out, which would mean that they had voted twice. The envelopes containing the ballot slips are then passed on to another team that opens them and counts the votes, thus preserving the anonymity of the votes. Any Israeli citizen over 21 may be elected to the Knesset, except holders of several high positions in the civil service and officers or career soldiers (those should resign from their post before the elections), soldiers in compulsory service, and felons who were convicted and sentenced to prison terms exceeding three months (until seven years after their prison term expired). The following people may not serve as a Member of Knesset (MK) due to their conflicting functions: The President of the State of Israel The two Chief Rabbis of the State of Israel Any judge in the judicial system, so long as they still hold office Any dayan, or judge in the Rabbinical Court system,