This is being driven by promised “free stuff”. Like free college tuition, free healthcare, free cash. Clearly, the people supporting the idea of socialism are ignorant. They are clueless about what socialism really is and the effect it would have on the country and eventually, their own asses.
If the question were asked properly and specifically pointed out the dirty details of socialism, far fewer would support it.
For example, if the poll asked a series of questions pointing out elements of socialism then asking each time, would you support socialism......you’d see people with a functioning brain recinding their support as they learned what socialism would cost them.