This is interesting. A look at stock market performance under Democratic and Republican administrations finds that Democrats have been better for stock performance, and it's not even close.

Bloomberg says if you took $1,000 and invested it in a fund that follows the S&P 500 in the time since John F. Kennedy was in office, the fund would have been worth more than $10,000 if invested under only Democratic presidents.

The same $1,000, invested in the same hypothetical fund starting with the Nixon administration and invested only under Republican presidents would only be worth $2,087.

If the fund followed the Dow Jones Industrial Average under the same conditions, the Democratic return would be $7,550 compared to $2,716 under the GOP.

The Democratic edge is so large that the party comes out ahead even without counting Bill Clinton (the Democrat with the biggest S&P 500 gain) and George W. Bush (the Republican with the worst market record). A hypothetical $1,000 investment under Democrats excluding Clinton was worth $3,539 versus $3,296 invested under Republicans except Bush.

Adding Dwight Eisenhower to the Republican column doesn’t overcome the Democratic advantage, either: $1,000 invested in the S&P 500 in January 1953 would have been worth $4,796 after 36 years under Republican chief executives -- still less than half the $10,920 nest egg accumulated in 23 years under Democrats.