Another quirk is that, during midterm elections, the electorate has been whiter, wealthier, older and more educated than during presidential elections. Biennial elections require our representatives to take this into account, appealing to one set of voters for two years, then a very different electorate two years later.

There’s an obvious, simple fix, though. The government should, through a constitutional amendment, extend the term of House members to four years and adjust the term of senators to either four or eight years, so that all elected federal officials would be chosen during presidential election years. Doing so would relieve some (though, of course, not all) of the systemic gridlock afflicting the federal government and provide members of Congress with the ability to focus more time and energy on governance instead of electioneering.

This adjustment would also give Congress the breathing space to consider longer-term challenges facing the nation — such as entitlement spending, immigration and climate change — that are either too complex or politically toxic to tackle within a two-year election cycle.