A vote on a rather poor devolution package, with an equally poor campaign.
If the Labour government offered a decent level of devolution (akin to Wales at the time), maybe it would have passed, and each English region would have its own assembly by now.
Possibly, though it would be significantly harder to get approval for an assembly in regions such as the South East than the North East, which was explicitly chosen for the first devolution referendum because it was the most favourable of any region toward the prospect of devolution.
And, of course, if English devolution had happened that way, the process would have been initiated more by politicians than by the public, which shows that, even if English people could be persuaded of the case for devolution, they have always been some way off of being violently supportive of it.