But the immediate result would not have changed, even if the Republicans had all voted for the bond.
Their vote was symbolic either way.
So what was lost and what was gained?
Let me speculate a bit just for a moment.
If the Republicans had voted "yes", and the bill lost anyway, the Democrats could come back with a DIFFERENT bond bill, and a much worse one. How would you like a $30M bond, or a $60M bond, and raised spending? Then the Democrats could say to the Republicans, why not vote for this bond, since you voted for last one? And the Republicans would find it more difficult to argue against.
So the strategy might be to force Democrats into a box canyon: no raise in taxes, no bond bailout.
Only alternative left: lower spending.
Just a thought... ;-)