Greg Sargent reports:

A senior Senate Democratic aide tells me that in today’s private meeting at the White House, Speaker John Boehner signaled to the President and to Harry Reid that Republicans were not willing to support any budget compromise that can’t garner the votes of 218 Republicans in the House. That would be a break from the GOP’s previous posture: Republican leaders had appeared willing to reach a deal that could pass the House with Republican and Democratic support, even if it meant losing some Republicans.

If that's the standard -- if Boehner isn't willing to rely on Democratic votes --  then a shutdown looks very, very likely.