It's not obvious, though. It's not clear whether you should mark approval for [anyone you think would do the job well] or for [anyone who you don't think would

It's not obvious, though. It's not clear whether you should mark approval for [anyone you think would do the job well] or for [anyone who you don't think would do the job badly]. Different people will read it differently, which muddies the question of whether it's accurate.