FRAMINGHAM 29 OCTOBER 2010 - Some election watchers are expressing concern over the fact that about one in four registered voters in next week's general elections will be casting their ballots using electronic voting machines that offer no verifiable paper records.
Paperless direct-recording electronic voting systems have drawn flak in past elections for being unreliable, too hard to audit and too prone to all sorts of tampering.
Such concerns have prompted 32 states and the District of Columbia to pass laws mandating the use of voting systems that support voter-verified paper records over the past few years.
Election officials in another six states have adopted similar systems even though they are not required by law to do so.
However, six states -- Delaware, Georgia, Louisiana, Maryland, New Jersey and South Carolina -- still use paperless e-voting systems statewide, according to a tally maintained by the election watchdog Verified Voting Foundation. In Indiana, Pennsylvania, Texas, Tennessee, and Virginia, direct-recording electronic voting systems account for a vast majority of voting systems.
In addition, paperless voting systems are in use to varying degrees in several other states, including Kansas, where at least 40% of the vote is paperless, according to Verified Voting.
The problem with using paperless voting systems is the relative difficulty of verifying the accuracy of electronic tallies, said the watchdog group's president, Pamela Smith.
Voter-marked paper ballots that are scanned and tallied by electronic systems, along with paper copies of electronically cast votes, together give election officials a reliable way to verify the accuracy of tallies, she said. "Paper enables the properties of recounting that we need right now," Smith said.
The fact that electronic voting systems can run into technical issues and are susceptible to tampering makes the need for a paper trail all the more important, said Bo Lipari, founder of New Yorkers for Verified Voting.
In November 2006, for instance, paperless touch-screen voting machines used in a congressional district race in Sarasota County, Fla., came under intense scrutiny after 18,000 ballots didn't record a vote in a tight race that was decided by a mere 369 votes.
The incident prompted calls by lawmakers for a review of paperless e-voting systems, and for the use of systems that produced a paper trail of every vote.
Last year, California officials disclosed that they had discovered numerous software errors and data deletion functions in e-voting systems, after nearly 200 votes were deleted from the official results for Humboldt County during the 2008 presidential elections.
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