House Speaker John Boehner has struggled for weeks to unite his fellow Republicans around a deal to avert the fiscal cliff. Having failed to find a package of tax increases and spending cuts acceptable to the Obama administration and the House GOP, he pivoted to a politically shrewd “Plan B” that would have extended all of the Bush-era tax cuts except for the high-income rate reductions that applied to income above a $1 million threshold. But as Boehner and his lieutenants worked to rally support, they found that they didn’t have the votes to pass “Plan B.” And so Boehner has suffered what is widely regarded as a humiliating defeat, one that has left many observers wondering whether he can survive for long as speaker.