The Paul Ryan decision was made on the 11th. The GOP's favorite pollster, Rasmussen, saw a meager two-point bump in its daily tracking poll following the Ryan pick (the 12-14 sample, which was the first one to fully cover post-announcement days).
But before the week was up, that two-point bump was quickly followed by a five-point swing toward Obama. Some honeymoon.
Of course this is Rasmussen. Tomorrow's results could be Romney 57, Obama 40 and no one would blink. But when the GOP's own propaganda pollster can't pretend that Ryan has given his ticket a sustained bounce, and in fact shows the opposite, it merely reinforces just how awful Mitt Romney's vice-presidential pick truly was.