of having been convicted of such an offence or having in proceedings relating to such an election been proved guilty of an act constituting such an offence. A person's disqualification for having failed to properly lodge a return of election expenses or having been convicted of an offence may be removed by the President. If the President has not done so, the disqualification ceases at the end of five years from the date on which the return was required to be lodged or, as the case may be, the date on which the person convicted was released from custody or the date on which the fine was imposed. In addition, a person is not disqualified for acquiring or exercising rights of foreign citizenship or declared allegiance to a foreign country if they did so before becoming a Singapore citizen. Electors To be eligible to vote in a general election in a particular year, a person's name must appear in a certified register of electors of that year. A register of electors is prepared for each electoral division in Singapore. A person is entitled to have their name entered or retained in an electoral register of a certain year if on 1 January of that year they are a Singapore citizen who is ordinarily resident in Singapore, not less than 21 years old, and not subject to any disqualifications. A person not resident in Singapore but entitled to have their name entered or retained in a register of electors for a particular electoral division may apply to be registered as an overseas elector any time before a writ of election is issued for any election in that division. A person is disqualified from having their name entered or retained in a register of electors if they: have done any of the following: acquired or applied to acquire the citizenship of a country outside Singapore by registration, naturalisation or other voluntary and formal act other than marriage; voluntarily claimed and exercised rights available under the law of a country outside Singapore which are enjoyed exclusively by citizens or nationals of that country, except the use of a foreign passport; taken any oath or made any declaration or acknowledgment of allegiance, obedience or adherence to any foreign power or state; or applied to the authorities of a place outside Singapore for the issue or renewal of a passport or used a passport issued