President Franklin Delano Roosevelt on the presidential yacht Potomac. The photo is from the FDR Presidential Library and is in the public domain.
I've been reading No Ordinary Time by Doris Kearns Goodwin about President Roosevelt and First Lady Eleanor Roosevelt and their lives on the home front during World War II.
One real stunner struck me in reading the book: in July of 1940, with FDR nearing the end of his second term as president--there was no announced Democratic presidential candidate! Four months before the presidential election, FDR had not yet made it known whether he would run for a third term or not.