Why has the use of polling increased greatly in america? what are the dangers, if any?

A simple reason in for the increase of polls is its cheap availability and use of social media, both of these factors when interconnected can make it really easy for anyone with the right approach to create a poll. Those people who are in the policy making business also use the medium to get the latest of public opinions about certain issues which may help them create a relevant policy.

There is just one danger as I see it, that when it comes to politics the politicians focus more on getting votes by spreading and creating biased polls which help mold the public opinion to a certain extent. 

the third answer is correct (c).

the laws that regulate the financing of political campaigns seek to guarantee the smoothness of funding so that there is no abuse of electoral economic power and to avoid the capture of future politicians by the donors.

this is because donor agents have their private interests that are not necessarily the same interests of the society that elected politicians must defend.

thus, interest groups should seek their interests within the legality of lobbying practices that are regulated.

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