Naming a vice presidential running mate this early in the primary season is a risky move, perhaps, but it would at least demonstrate novel political technique and a willingness to take bold steps to secure the party's nomination.

President Kennedy’s supporters were horrified by the idea of Lyndon Johnson as president.

On November 22, 1963, while President Kennedy prepared to face the political gauntlet of Dallas agitators, something extraordinary was happening across the pond and it was about to invade America.

Fifty-six years ago this week, President Kennedy arrived in Dallas, Texas as part of a multi-day campaign stop.

On August 27, 1881, then vice president Arthur had received the first of several dozen letters from a mysterious pen pal named Julia Sand.

Inauguration day, March 4, 1865, was a miserable day, but nonetheless an extraordinary scene. Abraham Lincoln had won re-election and the Civil War was all but won. His second inaugural address would later be regarded as one of the great speeches of his career, but not before his soon-to-be vice president made a drunken fool of himself.

February 28, 1844, was the worst day in presidential history. But the story of that day has one happy ending.

Given how loosely we throw around the term “constitutional crisis,” it is worth reflecting back on April 14, 1865, when the U.S. came dangerously close to one.

We can learn a lot from the triumphs and failures of the eight men who became president upon the death of their predecessors.

If Abraham Lincoln’s assassination opened the door to segregation, it was James Garfield’s murder that cemented that path.