Creatives who win a logo contest are required to deliver an AI (this is a raw, vector, editable format) that you can share with printers and other designers and can be manipulated. This way, you have complete control over what's corrected - expanding it, contracting it, taking pieces out, changing colors - whatever you want to change!
This is the most versatile design file that you can have. You’ll also have a JPEG file delivered to you which is another functional file. These are the 2 files that are required to be delivered.
After you select a winner, the contest goes into a Handover phase. The Handover phase is where the creative has 48 hours to finalize the design and deliver those into your contest in your contest dashboard called the Deliverables tab. Until the creative delivers those files, they are not the official winner of your contest.