Unless there was foul play involved, if among 36.89% majority voted to join NATO and the rest didn't care enough to vote - isn't that an argument in favor of joining?
That's where more context is needed - was the low turn over a protest vote (or protest lack of vote)? Was it indifference? Was it sabotage by the government (making voting hard)? I think these questions will determine the answer.
And, what does that say about the oh-so-democratic West if less than 40% people turn out and it still "accepts" a country as a member?