It's a bit hard to believe, but that's what a Public Policy Polling survey suggests: that only half of Americans would rather have President Obama in the White House than his predecessor, while 44 percent would prefer George W. Bush to still be president. Here's PPP's Tom Jensen: "Perhaps the greatest measure of Obama's declining support is that just 50% of voters now say they prefer having him as President to George W. Bush, with 44% saying they'd rather have his predecessor. Given the horrendous approval ratings Bush showed during his final term that's somewhat of a surprise and an...