Ezra Klein wonders whether they will come to regret it:
Republicans have not said yes to any of the [budget] deals the Democrats have offered. They continue to assume a better deal is just around the corner, and thus far, they have been right. Currently, they may be assuming that yet a better deal could be struck with, say, President Mitt Romney, and if he wins the election, they may well be right. If Obama wins, a reinvigorated Democratic majority might prove them wrong. But the fact remains: Their strategy of saying no has, thus far, paid great dividends, though not ones Republicans have decided to collect.