When it comes to voting for a specialist group first check that they have more than one policy.
Often these special interest groups go to an election with a single-minded goal… and that goal may align with one of your values, however, it also makes that person or group open to persuasion when it comes to other policies.
For them to get their one thing off the ground, they may well agree to vote for something else that would be negative for us a society.
So sure, support your special interest group, but find out where they stand on more than the one issue before you give them your vote. Push them to publish their policies about other aspects of society to ensure they have something to be drawn back to should they be swayed by a major party.