In American politics, there is a lot more to selecting our representatives than simply casting and counting ballots. The process of selecting the president is even more complicated. Instead, let’s look at the process by which state congressional representatives and local politicians get elected.

For most offices, a sequence of two public votes is held: a primary election and the general election. For non-partisan offices like sheriff and judge, in which political party affiliation is not declared, the primary election is usually used to narrow the field of candidates.

Typically, the two candidates receiving the most votes in the primary will then move forward to the general election. While somewhat similar to Instant Runoff Voting, this is actually an example of sequential voting—a process in which voters cast totally new ballots after each round of eliminations. Sequential voting has become quite common in television, where it is used in reality competition shows like American Idol.

Congressional, county, and city representatives are partisan offices, in which candidates usually declare themselves a member of a political party, like the Democrats, Republicans, the Green Party, or one of the many other smaller parties. As with non-partisan offices, a primary election is usually held to narrow down the field prior to the general election. Prior to the primary election, the candidate would have met with the political party leaders and gotten their approval to run under that party’s affiliation.

In some states a closed primary is used, in which only voters who are members of the Democrat party can vote on the Democratic candidates, and similar for Republican voters. In other states, an open primary is used, in which any voter can pick the party whose primary they want to vote in. In other states, caucuses are used, which are basically meetings of the political parties, only open to party members. Closed primaries are often disliked by independent voters, who like the flexibility to change which party they are voting in. Open primaries do have the disadvantage that they allow raiding, in which a voter will vote in their non-preferred party’s primary with the intent of selecting a weaker opponent for their preferred party’s candidate.

Washington State currently uses a different method, called a top 2 primary, in which voters select from the candidates from all political parties on the primary, and the top two candidates, regardless of party affiliation, move on to the general election. While this method is liked by independent voters, it gives the political parties incentive to select a top candidate internally before the primary, so that two candidates will not split the party’s vote.

Regardless of the primary type, the general election is the main election, open to all voters. Except in the case of the top 2 primary, the top candidate from each major political party would be included in the general election. While rules vary state-to-state, for an independent or minor party candidate to get listed on the ballot, they typically have to gather a certain number of signatures to petition for inclusion.

According to the Pew Research Center^[1], this happened because Trump won large states such as Florida, Pennsylvania, and Wisconsin by very narrow margins. This allowed him to gain all the electoral college votes available for those states.

How does the electoral college work? This ~5 minute video, provides a brief, and interesting introduction to how a citizen’s vote is translated into an electoral college vote (or how it is supposed to be).

Scary, huh? In fact, according to the Pew Research Center,

In the vast majority of U.S. elections, in which the same candidate won both the popular and the electoral vote, the system usually makes the winner’s victory margin in the former a lot wider than in the latter. In 2012, for example, Barack Obama won 51% of the nationwide popular vote but nearly 62% of the electoral votes, or 332 out of 538.

Looking back at all presidential elections since 1828, the winner’s electoral vote share has, on average, been 1.36 times his popular vote share—what we’ll call the electoral vote (EV) inflation factor. Trump’s EV inflation factor, based on his winning 56.5% of the electoral votes (304 out of 538) is 1.22, similar to Obama’s in 2012 (1.21).

Since all but two states use a plurality system, recall that this means the winner of the popular vote—no matter how small the margin—is not necessarily the winner of the electoral college vote.