Pretty good take, since Repubs generally lower taxes and raise spending once in power:

If Romney wins, not only will taxes stay low, Republicans will drop their opposition to government spending and deficits. That's because parties in power always support higher deficits and spending. It's just what they do.

We'd love to hear someone say with a straight face that Republicans, if given full power, would seriously stick to their principles of limiting government. Opposing deficits is strictly the purview of the opposition party.

So the Keynesian choice is Romney.