Recently I’ve been toying with the idea of doing a series of posts looking at the recent survey purporting to know a lack of economic knowledge on the Left, with one post for each of the eight questions on the survey. As I look at the list of questions, however, a clear theme emerges, namely that liberals tend to think that the price of a good or service isn’t much affected by the supply of that good or service or visa versa. According to the survey, liberals tend to think that restricting the supply of housing doesn’t increase the price of housing (question 1), that restricting the supply of doctors (through licensing) doesn’t increase the price of doctors (question 2), and that price floors won’t decrease the supply of either rental space (question 4) or jobs (question 8).
Coincidentally, I’m currently reading a (surprisingly good) book by Paul Krugman, in which he argues that conservatives tend to minimize or dismiss the part changes in demand have on getting us into or out of recessions. Naturally this got me thinking whether one of the things separating left from right in this country is a difference in the importance of supply and demand in economic phenomenon. For the above issues, at least, liberals seem to be ready to discount the importance of supply, whereas conservatives underestimate the importance of demand.