I do not trust them because it is too easy to manipulate the information in any way you want.
In a poll I saw this was the first poll question.
Do you support some level of gun control?
It was followed by many other questions and some sounded supported of both sides of the argument. Taken as a whole the poll looks legit, but in the end, the first question alone is all they need to bring up. And then it alone supports the statement;
"Most Americans are in favor of gun control measures."
"Most Americans are in favor of strict gun control measures."
"Most Americans are in favor of tough gun control legislature."
They will take whatever they want out of context to support their objectives.