House Speaker John Boehner’s big idea for a backup “Plan B” exploded Thursday night when, after days of wrangling with his own troops, he realized he didn’t have enough votes to pass the tax cut part of his plan, CBS News reports. With four days until Christmas and 11 until the effects of the “fiscal cliff” begin the big question today is: what happens now? Boehner sent House Republicans home for Christmas after last night’s legislative collapse, ensuring nothing will be passed until Dec. 27 at the earliest, when members are due back in town. That leaves Boehner and President Obama to keep negotiating – something that ground to a halt after Boehner announced he was moving forward with his “Plan B” earlier in the week…