Sen. Ron Johnson (R., Wis.) has just announced he will not vote for the C.R. From his statement:

I made a commitment to support the House in its pledge to cut $100 billion from the budget – a budget that should have been passed last year, when Democrats controlled both Houses of Congress and the presidency. I did so because I believe it was important to take that first step in enacting real spending cuts.
This is the first CR that does not achieve that level of spending reduction. As a result, I will vote no when this CR comes before the Senate.

Johnson also urged Congress to establish “very hard spending caps” on federal spending.