Study after study shows the American economy grows faster, and with less volatility, under Democratic leadership. What is the difference?
The difference is the focus on consumption. To a supply-sider, consumption is secondary to supply. They rely on the principal that supply creates its own demand, not necessarily for the supply created, but through the value created (Say's Law). It is only after we produce that we have income to spend on consumption. Therefore, the solution to economic downturns is to stimulate production by increasing incentives and decreasing or eliminating disincentives. Accordingly, supply-side driven solutions to economic problems typically involve lowering taxes on profits and easing regulation (safety, environmental, etc) on production.
The opposite view is that consumption drives supply. A producer will only make supply if motivated by a perceived demand. During times of plenty, producers will take more chances and supply will drive consumption through the increase of overall prosperity. However, when micro-economic miscalculations and external forces combine to create an economic downturn, the decrease in aggregate demand reduces the incentive for producers to supply. Thus, the solution to economic downturns is to stimulate demand by removing obstacles to consumer spending. Accordingly, demand driven solutions to economic problems involve programs that give people jobs (even if with increased inefficiency) and provide for consumer necessities so as to free income otherwise devoted to them.
So which theory is more effective at promoting economic growth? To answer that, look to the ability of the respective economic players to make choices.
Unless very precisely targeted, a supplier has quite a few options as to what to do with windfalls created by tax breaks and decreased regulatory compliance costs. Sure, he can reinvest it in more production. But he can also horde it or invest it in overseas production. And what incentive does he have to produce where demand is tepid?
A poor or middle class family has much fewer options. A family struggling to make ends meet will necessarily spend increased income on necessities and unfulfilled wants. This increased demand gives the producer an incentive to produce. This production then creates more supply through the increased value.
Consider this example: What would be the best way to stimulate growth in the cruise industry?
A supply sider would suggest lowering taxes on cruise operators and allowing cruise operators to operate without having to spend money jumping through regulatory hoops that serve as public safeguards. If the business were on the brink of being profitable, it might work. But if there simply wasn't enough people taking cruises, why would anyone put their money in the cruise business? All you'd do is add to the competition, and unless your entry into the market compelled more people to go on cruises, all you'd be doing in dividing the same small pie into smaller slivers.
A demand sider would ask “why are people not going on cruises?” maybe the cost of paying off a home, paying off an education, or paying off medical bills is consuming too much of their income for people to be able to afford to go on cruises. Or maybe people suspect their jobs are going to sail off to a foreign shore, and therefore are hording their income in preparation . Maybe some of the people who would ordinarily go on a cruise have already lost their jobs. Some demand side solutions might include subsidizing (either directly or through tax breaks) certain necessities such as education and medicine, reducing the hardship associated with job loss (e.g. by increasing unemployment benefits or the time a person can be on unemployment), or creating jobs (either directly or by tying business incentives to job growth). With more available money and more confidence, more people inclined to go on cruises will choose to do so. With the cruise business turning bigger profits, cruise operators will expand their business and new players will enter the game. Each of them will hire people who will, in turn, further stimulate supply with their consumption.
So why did i pick cruises as my example? Because my parents are going on one for the first itme in their lives. They could never afford to before. But their fortunes have risen (unfortunately due to inheritance) and their living costs have declined (due to me and my brothers becoming self reliant), and now they're putting money into the recreational economy. A party that can increase the fortunes and decrease the living costs of people in such a way that it makes them able to consume things previously out of their reach will fuel economic growth. Democratic presidents have tended to do this as a matter of policy.
To me, a bigger question is why is it so hard to convince the business class this despite the overwhelming objective evidence? For at the least the two decades since Reagan, ordinary Americans have been able to comprehend that stimulating supply creates jobs. Why then is it so hard for producers, whom we laud (and entrust our futures with) for their instinct and business acumen, to grasp that stimulating demand creates demand?
The links
Report on a study: stocks perform better, and with less volatility, under democratic presidents – the the surprise of businessmen.
http://money.cnn.com/2004/01/21/markets/election_demsvreps/
Report on a study: “Does the stock market do better when a Republican is president or when a Democrat is? The answer: It's not even close. The stock market does far better under Democrats.”
http://query.nytimes.com/gst/fullpage.html?res=9B07E6DD143BF933A15752C1A9659C8B63
report on two studies: Democratic presidents have consistently higher economic growth and concistently lower unemployment than republican presidents.
http://www.washingtonmonthly.com/archives/individual/2005_05/006282.php
An actual study: Democratic presidents have increased the overall income of poor families, resulting in a modest decrease in overall inequality. On average families at the 20th percentile of the income distribution have experience more than four times as much economic growth under democrats as they have under republicans.