As someone who conducts surveys as part of work, the question is phrased in a way that is designed to elicit a "no" response. The question is: Virginia legislators are considering placing tolls on I-81. What is your opinion?. Of COURSE people will answer "no" because it's not providing the full story here! The tolls would be in order to fund improvements, which the question nor the post containing it does not mention. An unbiased question could be: Virginia legislators are considering placing tolls on I-81 in order to fund improvements, potentially including roadway widening and improved incident response. What is your opinion?
It should be noted that this is a highly-unscientific poll conducted using Facebook by a page whose target audience will be opposed to increasing the cost of anything. Facebook polls are VERY easy to manipulate. Heck, there are groups on Facebook that exist to swing Facebook polls in one direction or the other! Because of how the poll was done and the demographic that responded, I'm going to dismiss the results as not representative of the population. Come back with an unbiased survey that's representative of the population and my opinion may change. Again, as someone who does this for a living, I wouldn't even think about using something as easy to manipulate as a Facebook poll.