Yes, you can still vote even if you have forgotten to bring your polling card. Please ensure that you have your original NRIC/passport with you at your allotted polling station.

Inform the election official at the entrance of the polling station that you did not bring your poll card, and he will direct you to the Enquiry Counter at the polling station to issue you a replacement poll card.

If you have not received your poll card, you can log on to the Elections Deaprtment website vis SingPass to view/print your ePoll card. You may also print your ePoll card at the ELD counter.

Source: ELD