Abraham lincoln won a presidential election in civil-war-torn America in 1864, and fdr secured his fourth term in 1944 while American troops were in action across the globe. Winston Churchill, by contrast, avoided the electorate until the war in Europe was over in 1945, at which point he was turfed out. Holding an election when enemies are occupying your territory or raining bombs on it, and when huge numbers of your citizens are away fighting, is tricky. Not holding one is tricky in a different way, opening those in power to the charge of illegitimacy. That is the bind that...