How might the media have affected voter turnout in the election of 1980?

It is because if more people are aware of the candidates and aware of the elections then they would have more than likely come to the polls more. also if some publicity from the media in inappropriate then it can also send away the voters. The voter turnout is the percentage of eligible voters who cast a ballot in an election.

high entry costs prevent new producers from entering the market.

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.