The equation for voter turnout is often expressed as: R = PB + D – C. R is the reward from voting, and if R is greater than 0 then it would be a rational decision to vote. PB is the probability that the vote is significant in that it breaks a tie. D stands for the duty one feels to vote, and C stands for the costs of voting. There has been no doubt that voter turnout has increased, shown in the figure below. There could be a variety of factors that influence this growth. Perhaps the increase is due to more social groups being given the ability to vote as voting extended beyond land owning white males. Perhaps it is due to the easy accessibility to voting centers, which therefore reduces the cost of voting. While these may be valid reasons, I believe that one significant factor influencing voter turnout is actually the increased polarization between the American parties.
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As shown in the figure above, polarization is increasing between the Democrats and Republicans. It would appear that there was a brief relief of polarization around the times of the World Wars. This would be expected as war can unite nations as easily as it divides them. However, since the 1950s the American political parties have continually become more polarized to the point that they are more polarized then they have ever been in history. This polarization creates a vicious competition between candidates and an increased sense of partisanship that result in a large voter turnout. Due to the high level of partisanship revolving between the Trump supporting republicans and Trump opposing democrats, the voter turnout for the 2020 election will be the highest numbers yet.
Competition between candidates can contribute to the increased voter turnout. Elections that have the prospect of high competition can lead candidates to pursue different methods to gain more votes. They will most likely campaign more, make more public appearances through participation in question and answers, forums, and debates. The easily accessible information these efforts create reduces the cost of voters having to go out of their way to find information about candidates. Increased competition between candidates creates intense debates, even among candidates of the same party (a good example being the recent Democratic debate in Nevada. If a candidate is able to hold their position well in these debates then voters feel more confident standing behind that candidate. They feel an increase of partisan support towards the candidate and an increased dislike of the opposing party. This increased partisanship can also lead to an increase in voter turnout.
John Aldrich modifies the voter turnout equation by implementing his own variable, D in his book Why Parties: the Origin and Transformation of Political Parties in America. The modified equation is: R = PB + B + D – C. According to Aldrich, B represents the benefits of the candidate winning. I would argue that the emotional satisfaction of your party or candidate winning over another would be included in the B variable. Imagine an election with high competitions where all candidates have ripped into one another, and imagine the satisfaction of your chosen candidate being elected over all the others after this long process. There would no doubt be a strong partisan pride towards your party, while the “losing” side might experience a strong partisan pride towards their party out of distaste of the elections.
The level of competition of the 2020 election is still in debate as the Democratic party is still trying to whittle their vast number of candidates down. However, already there is a high level of polarization in the nation in regards to the support of Donald Trump. It would seem that feelings towards President Trump tend to lean to the extremes. Either people, generally Republicans, love the President or people, generally Democrats, hate the President. This enormous polarization in regards to just the President himself would suggest the biggest voter turnout in history. The emotional benefit for the Republicans if President Trump were re-elected would be just as equal to the emotional benefit for the Democrats if President Trump was not re-elected. In response to each voter seeking that emotional benefit of their vote, more will be willing to vote. It would seem that at this time where the parties are the most polarized will spur the most voters in history.
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