The fact is that the news show can ask any questions they wish and show the data in any manner they see fit. Polls can be manipulated in many ways and very often are. This is not simply a problem of the news media, because candidates have become so fixed using polls as the basis of their approach to the public, they use this faulty data to shape the ideas they will feed the voters that day. Using this media created information to shape policy is wrong on many different levels but it is only a result of much worse problem. Polls are not only the favorite tool of the media, they have become the lifeblood of political campaigns.
Politicians also use their pollsters to find out what people think.
Politicians hear back from their pollsters about what the pollster asks the people they interview, they do not get what the public at large really thinks about certain ideas. If they hear that certain ideas are not playing well among the public, those ideas are changed or thrown out. Using polls to find out what topics interest the public in order to set relevant policy is the best use of the limited information a public poll can give but for the most part politicians use polling data to change their stance on certain issues. Losing politicians with the courage and integrity to what they feel is right is not something we want. A representative democracy is meant to shield us from mob rule by getting people with brains enough to know what is right into office.