The authors are on the advisory board of the Lincoln Project.

This November, Americans will cast their most consequential votes since Abraham Lincoln’s reelection in 1864. We confront a constellation of crises: a public health emergency not seen in a century, an economic collapse set to rival the Great Depression, and a world where American leadership is absent and dangers rise in the vacuum.

Today, the United States is beset with a president who was unprepared for the burden of the presidency and who has made plain his deficits in leadership, management, intelligence and morality.

When we founded the Lincoln Project, we did so with a clear mission: to defeat President Trump in November. Publicly supporting a Democratic nominee for president is a first for all of us. We are in extraordinary times, and we have chosen to put country over party — and former vice president Joe Biden is the candidate who we believe will do the same….

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