@Cycloptichorn,
I think part of our disagreement arises because we need to distinguish between three different things:
1) The total amount of stimulus money spent: That's the thing of which we may still have the greater part ahead of us.
2) The impact of the stimulus on the
level of GDP: This part is proportional to the
rate of stimulus spending, and is currently reaching its peak.
3) The impact of the stimulus on the
growth of GDP: This part is proportional to the
growth of stimulus spending, and has already receded to about zero.
You're basing your argument on #1. But the unemployment rate, which chiefly determines if voters will be happy in November, depends on some combination of #2 and #3. Both of those are going to recede over the course of 2010.