Pennsylvania race shows need for U.S. voting machine upgrades: experts

By Dustin Volz WASHINGTON (Reuters) - Pennsylvania's tight congressional special election underscores the need for states to replace aging voting machines and use paper ballots as backups to ensure the integrity of vote counts ahead of pivotal November U.S. midterm elections, election security advocates said on Wednesday. Democrat Conor Lamb led Republican Rick Saccone by only a few hundred votes out of nearly 230,000 cast in the closely watched U.S. House of Representatives election on Tuesday in western Pennsylvania. With many states using antiquated voting machines and with concerns about potential interference in U.S. elections by Russia or other actors, there is rising concern among experts about the need to safeguard American balloting.