Protecting American jobs emerged as the key theme for a series of rival political rallies in Ohio.
Ohio is part of America's so-called Rust Belt - which has struggled to retool as factories require fewer workers.
Wall Street is also digesting a surprise report on further contraction in the manufacturing sector, as the labor market appears to continue to grow.
In Wilmington, Ohio, Republican candidate Donald Trump vowed to keep jobs in the U.S.
IN: "Where you...
OUT: ...do it any more (applause fade)"
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Hillary Clinton is off the campaign trail, but U.S. Vice President Joe Biden is making speeches on her behalf.
He says Donald Trump doesn't understand.
IN: "I know...
OUT: ....with a spoon! (applause fade)"
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