With less than 50 days until the elections, Republicans aren’t too psyched about Mitt Romney’s chances. The nerves come after the candidate failed to weather a storm over his “47 percent” comments. Many Republicans tell Politico that to win, Mitt has to focus on swing states (cough cough, stop raising cash in Utah) and talk about the economy. One bundler tells Politico that the campaign is “imploding.” Meanwhile on a radio show in Nevada, running mate Paul Ryan said that Romney was “obviously inarticulate” in his point. President Obama told Letterman his opponent was “writing off a big chunk of the country.