I've came across several articles recently about the variation in US Presidential Politics ahead of re-election. The argument is simple; potentially unpopular policies and laws are passed at the beginning of a presiding government term as opposed to more popular laws towards the end of term so that the presiding government will stand better chances of re-election. This simple argument is based on the bias of recent memories, in other words, people tend to remember recent past better than what happened several years ago.
Below is a table summarising the S&P 500 annual changes in %: 1962-2010 (13 election terms):
Of course the amount of data we can rely on is statistically seen, tiny. Yet it provides some indication to a more positive performance, in the second half of the US Presidential term. Especially the 3rd year of a term, has historically seen much growth.
