Pennsylvania's Senate is debating legislation that seeks to delay the ability of the state government to decertify voting machines in expectation of replacing them all by 2020's presidential elections.
Tuesday's debate emerged a year after Democratic Gov. Tom Wolf pushed for new machines following warnings by federal authorities that Russian hackers targeted Pennsylvania and at least 20 other states during 2016's presidential election.
However, Republican senators have complained that Pennsylvania is rushing to buy machines at considerable taxpayer expense when there's no legitimate example of a voter irregularity in the state.
Pennsylvania is one of 13 states where some or all voters use machines that store votes electronically without printed ballots or another paper-based backup that allows a voter to double-check how their vote was recorded.