You can vote by post or in person at one of the overseas polling stations if you live overseas and meet the following criteria:

a)              are a citizen of Singapore (holder of pink NRIC);

b)              are not less than 21 years of age;

c)              are not disqualified from being an elector under any prevailing law;

d)              (i) have a Singapore residential address on your NRIC; or

              (ii) if you have changed your NRIC address to an overseas address, you must have a local contact address in Singapore that is registered with the Immigration & Checkpoints Authority (ICA); and

e)              have resided in Singapore for an aggregate of at least 30 days within the 3-year period prior to the date of application to be registered as an overseas elector.

You will need to submit an online application via Voter Services with your Singpass.

The source of information is from the ELD website.