The 2020 election cycle in the United States has been rife with partisan infighting and power plays, and produced speculation galore. One of the biggest rumours thus far is whether the Democratic heavyweight Hillary Clinton will enter the fray again.

Joe Biden’s once-moribund presidential bid came back from the dead in the past week, but there has also been an increasingly growing flow of questions regarding his mental health from his detractors.

A three-page medical report, which did not include a cognitive functioning test, stated that he is fit for office despite having suffered two life-threatening brain aneurysms. His critics, however, including President Trump, have cited several awkward gaffes he has made on the campaign trail as evidence of his perceived cognitive decline.