Well they have chosen to go after eliminating the secret ballot instead of putting in place a system like this, so I think that their actions say that they aren't in favor of taking this route instead of killing the secret ballot.
The unions aren't against secret ballots. What they're trying to do is eliminate a step in the process which is there for the sole purpose of preventing them from forming a union.
Um, yes, thats exactly why that step is there. And thats a good thing. Can you imagine if a politician said "I am not against secret ballots, what I am trying to do is eliminate a step in the process which is there for the sole purpose of preventing me from staying in office"?
Thats what secret ballot elections are for, to make sure its what people REALLY want. It is necessary to have that check to make sure that the union isnt forcing itself on people who dont want it. You have to protect pro union as well as anti union workers.