Any excuse will serve a tyrant.
Aesop
The Fed threw the market a bone, stating that they would maintain easing through the upcoming Presidential election if the economic conditions called for it.
And so a powerful relief rally ensued. Whether it will be maintained is another question and answer, heavily influenced by the upcoming economic reports, especially with regard to employment, median wage, and spending. And of course the sovereign debt situations and wobbly governments around the world.