remove the abstain button

Hi,
is there any way to remove the abstain or the Dot (.) option during photo contest. i only want the users to vote for somone and they shouldnot have the option to abstain or negative vote anyone

In the first step you can choose between various voting types. I think good voting types for use case is heart or like voting. Some more info can be found here: https://pollunit.com/en/tutorials/advanced_poll_settings