Unpopular GOP candidates mulling when to pack it in

WASHINGTON (AP) — For months, Republican presidential candidates with dwindling bank accounts and negligible support in polls have been finding reasons to stay in the 2016 race.
Now, a few must weigh whether they can keep competing after being downgraded or excluded from Tuesday's fourth GOP debate. New Jersey Gov. Chris Christie and former Arkansas Gov. Mike Huckabee have been bumped to the undercard debate because of low poll numbers, while South Carolina Sen. Lindsey Graham and former New York Gov. George Pataki didn't qualify for either event.