But beyond that, shutting down a subreddit for multiple days is such a drastic action, it should require more than just a simple majority in a quick online poll.
For instance, to amend the Constitution, you typically need a supermajority (2/3 or 3/4 of different parts of the government). To convict someone guilty in a trial, you typically need evidence beyond reasonable doubt and a unanimous jury verdict.
The burden of proof that users want to shut down the subreddit should be overwhelming.