Polls are often useful to get an idea of how the public feels about certain things. They shouldn’t dictate policy in and of themselves–rights are rights no matter how the mob feels about them, after all–but they can still serve a purpose.
However, it should also be noted that polls can swing wildly.
For example, let’s take a recent poll in Nevada.
Nevadans are roughly split on whether stricter gun laws would reduce mass shootings, but vast majorities support gun control policies such as universal background checks and raising the legal age for purchasing assault and semi-automatic weapons to 21, according to the new Nevada Independent/OH Predictive Insights poll.