The Alexander-Murray bipartisan effort to stabilize the Obamacare individual insurance markets will not pass the Congress on its own.
The only chance it now has is to be added to a must-pass legislative deal, such as the one needed to fund the government by the December 8th deadline in order to avoid a government shutdown.
Also sitting in the queue, and certain to pass at some time, is the Children's Health Insurance Program (CHIP) reauthorization bill. The Congress is currently struggling over the pay-fors for this reauthorization but there is wide bipartisan agreement that it must be funded before the states start running out of money, which will begin in a few weeks. CHIP now covers nine million kids.
Conservative Republicans are adamant that they do not want to pass an “insurance company bailout” bill like Alexander-Murray. Particularly in the House, where Republicans were able to pass a "repeal and replace" bill, these members have already taken a controversial vote to cut Medicaid and insurance subsidy support and after that tough vote don't now want to have to explain why they have backtracked to "bail out" Obamacare with the Alexander-Murray short-term patch bill.