That claim is a complete misuse of statistics. In the first place, it chooses a range that goes back to FDR, but doesn't include him. Why? Including him destroys the point that they want to create as a "truism". This, in spite of the fact that the situation handed Obama was most like that handed FDR. In addition, though "over 50 years" sounds like a long time, it includes very few data points - as there is an election only every 4 years and there is not always an incumbent President. (If I counted right, there are 10.)
I am not arguing that there is no relationship. Clearly it is far better to run with a good economy, but, Reagan was the Presidet who won with the 7.2% won in a landslide - making it likely that he would still have won even if the rate had been a point or two higher. There was nothing magical about 7.2%.
http://www.dailykos.com/story/2011/06/03/981672/-Unemployment-rate-does-not-necessarily-predict-re-election-chances?via=searchDemocrats NEED to get this counter out, because what can hurt Obama is anything that sets the conventional wisdom that he will lose. This claim, that any good statistician would see as contrived, does just that. (Look at the DK plot of margin of victory and unemployment and mentally try to see what the regression line is - you can see the data really does not fit the idea that this is the make of break relationship that Candy Crowley, John King, Dick Gregory and others have spoken of with solemn faces.
However, it is clear that President Obama and the Democrats NEED to be seen, as FDR was, with working hard to get people back to work. First of all, they need to do this because it is the right and moral thing to do - completely independent of re-election politics.
One factor that might begin to work more in our favor was suggested by a Monmouth University poll just in NJ. The print edition had pie charts that showed the response to people being asked for each party if they "care about the middle class". The online version does not include the charts, but does include this startling result:
"The poll also found that 40 percent say Democrats look out “a lot” for the middle class, while just 17 percent said the GOP does the same."
If you are willing to trust me, here are the full numbers on that question from the print copy of the Daily Record of Morris.
Question: Do you think the Democrats look out for the middle class - A lot: 40%, A little: 36%, and Not at all:22%
Question: Do you think the Republicans look out for the middle class - A lot: 17%, A little: 41%, and Not at all:39%
These numbers indicate that Americas are very unhappy. We need to improve our numbers here, but the Republican numbers are absolutely horrendous. This survey did not attempt to define "middle class". Most people in this country self identify with being "middle class" and those who think they are poor, are even less likely to like the Republicans. Another question was "If the Republicans dislike those with lower income" had 43% agreeing with this. This is stunning to me as "disliking" really is strong in terms of how a political party feels towards a large segment of the population.
Incidentally, the title o this article in the print addition that was above the fold dominating the front page (with the Middle class questions represented in colorful pie charts) was "Politics of Hate tires Jerseyans, Most worry about who will look out for the Middle Class".
(This is usually a very Republican paper, that went so far as to endorse Kean, jr, who ran a very negative campaign against Menendez, mostly based on false charges of corruption. (Bush appointed US DA, Chris Christie subpoenaed Menendez two months before the election - nothing ever came of his "investigation" Remember 2006 was the year the Republicans used US DAs politically.) In their endorsement, they agreed that Menendez was not corrupt, but blamed him for the issue dominating the campaign. The best they had to say for Kean, as they endosed him, is that they hoped that in Senate he would be like his father - an independent, moderate Republican.)