a chance of winning the prize votes from steemcurator01

Your vote as a win is indeed a very big (the biggest?!) motivation for users to participate in the challenges. It gets a little unpleasant taste when you vote some items already before the evaluation.
I think it's great if you also vote for articles you particularly like, even though they may not be favorites of the community mods in charge. That way your votes are spread a bit wider. However, here's a request: Wait with these "extra votes" until the evaluation of the respective competition has taken place. This way every participant keeps the feeling of equal chances.
This friendly request is addressed to you by an outside observer who has never "officially" participated in the "Engagement Challenge".