The state of industry speaks for itself better than some candidates do. When Mitt Romney in Toledo on the 26th of September, 2012 said, "we see manufacturing jobs disappear", he neglected to mention that most of that disappearing happened during the tenure of a President who implemented the same policies that Romney himself is pushing. He also neglected to mention that under the current President they're not disappearing anymore. Under the current President, we've seen manufacturing jobs grow again.
In manufacturing in specific, manufacturing jobs moved mostly sideways through the first quarter of 2006, creeping to a peak in April of that year. From the April 2006 peak, 1.844 million manufacturing jobs were lost under the Bush II administration by the first full month of President Obama's term. From the floor in January 2010, we've recovered 512 thousand manufacturing jobs as of August 2012. There's still a long way to go, but adding half a million manufacturing jobs since January 2010 is growth, not "disappearing".