Williamsburg's Edge had its Palin banner, and now Chelsea's +Art has unveiled its "Obama contigency clause," the AP reports: "Anyone who signs a purchase contract before Election Day can back out, no questions asked, if John McCain beats Barack Obama. Developer Erik Ekstein says he's willing to put the 'Obama contingency clause' in any contract signed before Nov. 4. Ekstein says he got the idea after hearing from apartment hunters who said they won't be buying property at all if the Republican wins. Ekstein says an Obama presidency will be better for the economy." [1010wins; previously] For more stories from Curbed, go to curbed.com.