Another Inconvenient Truth: The U.S. Economy Always Does Significantly Better Under Democrats

Republicans have always extolled the virtue of fiscal conservatism as if it were an indisputable  law of nature. But in this case, a different law applies. That's Steven Colbert's famous law of political reality:  "Reality Has a Well Known Liberal Bias." It turns our that for at least the last 60 years the economy has always done significantly better under Democrats. This has been a well known fact for many years, but it has received almost no recognition in the mainstream media, in spite of the media's alleged liberal bias.

Ezra Klein takes up the subject in his September 8, 2010, column in the Washington Post titled "Why elections matter, in one graph." This is the graph:

The graph shows that, except for the top 5 percent, everyone's income grows more under Democrats than Republicans, and the poor and middle class do much better. Even the top earners do almost as well under Democrats as Republicans.

One might consider this an anomaly or statistical fluke, but it has proved to be consistent at least since the end of World War II, spanning five Democratic and six Republican presidents. Kevin Drum discussed the consistency of these results in a 2005 post in his Washington Monthly blog:

Skeptics offer two arguments: first, that presidents don't control the economy; second, that there are too few data points to draw any firm conclusions. Neither argument is convincing. It's true that presidents don't control the economy, but they do influence it — as everyone tacitly acknowledges by fighting like crazed banshees over every facet of fiscal policy ever offered up by a president.

The second argument doesn't hold water either. The dataset that delivers these results now covers more than 50 years, 10 administrations, and half a dozen different measures. That's a fair amount of data, and the results are awesomely consistent: Democrats do better no matter what you measure, how you measure it, or how you fiddle with the data.

 Even the Japanese Times had something to say about it in October 2008.

The facts are hard to dispute; indeed, the historical record is now so stark that diehard Republicans are probably starting to wonder if there is a curse. Over the period for which modern statistics are readily available, Democrats have outperformed Republicans by almost every traditional measure of economic performance (per capita GDP growth, unemployment, inflation, budget deficits).

Yes you read that right: "almost every traditional measure of economic performance." You name it, Democrats do better.

Economist Larry Greenberg provided a handy summary in 2008 on his Current Thoughts blog:

With twenty years on each side and since some of the ups and downs of the U.S. business cycle lie beyond the direct control of policymakers, one would expect similar results in the two groups.  Not so.  Instead, one discovers below a significant advantage when a Democrat occupied the White House in each of the five categories.

In 2008 Tommy McCall in the New York Times looked at investment performance under Democratic and Republican administrations since 1928. Again Democratic performance was much better. $10.000 invested under Democratic administrations would net $300,671 over 39.9 years, while the same amount invested under Republican administrations would  net only $11,733 over 39.7 years (including the Hoover administration) or $51,211 over 35.7 years (excluding the Hoover administration).

Given all of this, it's not surprising that poverty decreases under Democrats and increases under Republicans. The Democratic Short List crunches the data:

Examining the Census data, what I found was this: during the 20 years of Republican administrations, each year on average the number of Americans living below the poverty line rose by 416,400, while during the 20 years of Democratic administrations, each year on average this number fell by 829,900. I then applied the analysis suggested in Michael Kinsley's article: I credited each year's performance to the previous year's administration. In this analysis, during the years credited to Republican administrations, the number of Americans below the poverty line rose 371,095 on average each year, while during the years credited to Democratic administrations, this number fell 845,421 on average each year.

Rachel Maddow summed it up nicely on September 11, 2010, on her MSNBC program, including an interview with Ezra Klein:

The lesson from all of this is that the Republican trickle down, supply side, borrow and spend economic policy simply doesn't work. The evidence is conclusive.