By , (Reuters) - After scrambling to replace an aging force of poll workers most at risk from the coronavirus, U.S. election officials face the challenge of running the Nov. 3 voting with untested volunteers tasked with following strict health protocols in an intensely partisan environment.A nationwide drive that recruited hundreds of thousands of younger poll workers - the people who set up equipment, check in voters and process ballots - means most battleground states will not be understaffed, a Reuters review of Florida, Georgia, Michigan, North Carolina, Ohio, Pennsylvania and Wisconsin...…By , (Reuters) - After scrambling to replace an aging force of poll workers most at risk from the coronavirus, U.S. election officials face the challenge of running the Nov. 3 voting with untested volunteers tasked with following strict health protocols in an intensely partisan environment.A nationwide drive that recruited hundreds of thousands of younger poll workers - the people who set up equipment, check in voters and process ballots - means most battleground states will not be understaffed, a Reuters review of Florida, Georgia, Michigan, North Carolina, Ohio, Pennsylvania and Wisconsin...WW…