One of the enduring myths of campaign analysis is that you can actually count the number of 'undecided' voters by asking voters if they are undecided or not. Sometimes, significant numbers of voters actually change their minds.

When the blood of thousands of Americans is shed, the impact lingers. For a generation after the Civil War, the Republican injunction to 'vote as you shot' kept the party dominant for decades; from 1868 to 1912, only one Democrat - Grover Cleveland - won the White House.

In the many-mansioned house of Alternate History, I occupy a small corner. The trio of what-ifs I chronicled in 'Then Everything Changed' all begin with tiny, highly plausible twists of fate that lead to hugely consequential shifts in history.

Jeff Greenfield Quotes