Bad things at first, and then worse things down the road:
A prolonged government shutdown — followed by a potential default on the federal debt — would have economic ripple effects far beyond Washington, upending financial markets, sending the unemployment rate higher and slowing already tepid growth, according to a wide range of economists.
A shutdown of a few days might do little damage, but economists, lawmakers and analysts are increasingly bracing for a shutdown that could last a week or more, given the distance between Republicans and Democrats. Such an outcome would suck money out of the economy and spread anxiety among consumers and businesses in a way that is likely to hold back economic activity.
Which is why even Republican-leaning business groups don't want this to happen. But, as things currently stand, the shutdown begins tomorrow.