Hillary Clinton, 67, at Tom Harkin Steak Fry, September 2014

The post-election analysis of the Democratic Party’s massive losses has covered numerous factors, including Republican dark money, a lack of a unified Democratic message, and historic trends for the sixth year of a two-term incumbent president. Some pundits say “just wait until 2016” when the Democrats will make a stunning comeback, winning the White House and retaking the U.S. Senate. However, few of these analysts mention a potential time bomb that could spoil the Democrats’ 2016 election chances. That time bomb is age.