I will take number three for 1000 Alex.

Republicans would probably argue that is true under Democratic Administrations only.

Borrowing your Republican Cognitive Dissonance hat for a second I think they would probably explain that Wall Street buys on expectations, not the news. Soooo when a Democrat is in office to screw up the economy Wall Street buys because they assume that voters will turn on the Democrats because the economy sucks and then sweep them totally out of power replacing them with a completely Republican Government which will give Bankers and the illk anything that they want, which will be great for Business!

Of course if Wall Street goes up under a Republican Administration, THAT is simply great for America, no explanations needed.