31.   The political calculus for Dole is clear.

32.   The political calculus is complex and unpredictable.

33.   This is the same political calculus that has governed the congressional session so far.

34.   This makes the political calculus of the line-item veto a tricky proposition.

35.   What is the political calculus at work here?

36.   Whether this is standing on principle or simply political calculus is hard to tell.