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In a speech in West Virginia that was billed as being about tax reform, President Donald Trump continued his refrain about widespread voter fraud by stating that millions of people vote multiple times.
"In many places, like California, the same person votes many times," he said. "You probably heard about that. They always like to say 'oh that's a conspiracy theory.' Not a conspiracy theory, folks. Millions and millions of people, and it's very hard because the state guards their records. They don’t want to see it."
Is there evidence that millions and millions of people have voted many times? No, there's not. But we will summarize the research on this topic. National experts have said that voter fraud is isolated and rare -- and the same holds true for voting multiple times, a phenomenon called double voting.
Double voting -- a person casting more than one ballot in an election -- is not the same thing as a person being registered in more than one state, which often happens when people move. Pew found in 2012 that approximately 2.75 million people have registrations in more than one state. But as we’ll see, that doesn’t mean that 2.75 million people actually voted more than once.
We contacted Trump’s spokesman to ask for evidence and didn’t get a reply.
A group of experts in computer science and political science from Stanford and University of Pennsylvania published a paper in 2017 that estimated the prevalence of double voting in the 130 million ballots cast in the 2012 presidential election.
The researchers estimated that 33,000 votes, or .02 percent of the votes cast, could have been double votes, but they called that an upper-bound estimate.
"We would expect to estimate there were around 33,000 double voters even if there were no actual double votes cast," they wrote.
The paper concluded that there was almost no chance that double votes could affect the outcome of a national election.
The researchers explained in an essay in Slate that double voting is hard to detect because voting records cannot be easily linked across state lines.
Kris Kobach, the Republican secretary of state of Kansas, who helped lead Trump’s now defunct voter fraud commission, promotes the Interstate Crosscheck Program, an ongoing program that coordinates the collection of registration records across states.
As of 2014, 28 participating states provided the program with their registration records. The states received a list of registrations in their own state that matched the first name, last name, and date of birth recorded on a registration in another member state.
In the 2012 election, Crosscheck flagged more than 1.4 million registrations as potential duplicates that member states should further scrutinize.
But the key word there is potential.
"In a country where 130 million votes are cast in a presidential election, there is a surprisingly high chance that two ballots cast under the same first name, last name, and date of birth actually belong to two different people," the researchers wrote. "While it is unlikely that any two randomly selected vote records would share a common first name, last name, and birthdate, a sizable number of these cases will occur once we aggregate over the 10 quadrillion pairs of vote records in the population. This phenomenon is what statisticians call the birthday paradox."
There have been some investigations into double voting, some of which led to prosecutions, but they are rare -- far, far less than millions of votes.
Using the database, we counted 80 criminal conviction cases for duplicate voting between 2001 and 2017. (In a few cases, two individuals were convicted.)
The California Secretary of State was investigating 56 allegations of double voting as of March 2017, according to its response to a public records request by CALmatters, a nonprofit journalism venture.
The New Hampshire Department of State and Department Safety said in the fall of 2017 that 196 people were being investigated as possibly having voted in New Hampshire and one other state. This information is still under view, and the state expects to announce findings in June.
News 21, a national investigative reporting project, found that there had been 13 cases in Arizona prosecuted for double voting, according to a 2016 report. In North Carolina, Verna Roehm, 77, pleaded guilty to voting twice after she admitted that she fulfilled her dying husband’s wish to vote for Mitt Romney in 2012.
Voting experts such as Loyola law professor Justin Levitt said that no research backs up Trump’s statement.
"There is zero evidence for President Trump’s claim that there are millions and millions of double voters," he said. "Zero."
Trump said, "In many places, like California, the same person votes many times. You probably heard about that. They always like to say 'oh that's a conspiracy theory.' Not a conspiracy theory, folks. Millions and millions of people. They don’t want to see it."
While there have been some investigations into multiple voting allegations, including some convictions, they are rare. We found no evidence that the amount of double voting is anywhere close to millions.
We rate this statement Pants on Fire.
Sharad Goel and Marc Meredith, et. al "One Person, One Vote: Estimating the Prevalence of Double Voting in U.S. Presidential Elections," Oct. 24, 2017
Slate Magazine op-ed by Sharad Goel and Marc Meredith et al, "We looked at 130 million ballots from the 2012 election and found practically zero evidence of fraud," Nov. 7, 2016
Lorraine Minnite, "The politics of voter fraud," 2007
Washington Post, "No, voter fraud actually isn’t a persistent problem," Sept. 1, 2016
Mother Jones, "The dog that voted," July 2012
New York Daily News, "North Carolina widow fulfills husband's dying wish, is charged with voter fraud," Nov. 27, 2014
Brennan Center, "Heritage Fraud Database: An Assessment," Sept. 8, 2017
Justin Levitt, Brennan Center for Justice, "The truth about voter fraud," 2007
CalMatters, "Valid voter fraud complaints in California? Dozens, not millions," March 8, 2017
Heritage Foundation, "Voter Fraud Database Tops 1,000 Proven Cases," July 24, 2017
Pew, Inaccurate, Costly, and Inefficient, 2012
PolitiFact, "Donald Trump's baseless claims about the election being 'rigged,'" Aug. 15, 2016
PolitiFact, "Dick Morris: There's proof that over 1 million people voted twice in 2012," April 10, 2014
PolitiFact, "Donald Trump's Pants on Fire claim of 'large scale voter fraud,'" Oct. 17, 2016
PolitiFact, "Pants On Fire for Trump's claim about 'serious voter fraud' in California," Nov. 28, 2016
PolitiFact, "Is there evidence of voter fraud in New Hampshire, as Kris Kobach said? Not really," Sept. 15, 2017
Interview, Marc Meredith, University of Pennsylvania associate political science professor, April 5, 2018
Interview, Justin Levitt, Loyola Law school professor, April 5, 2018
Interview, David Scanlan, New Hampshire Deputy Secretary of State, April 6, 2018
Interview, Jonathan Brater, counsel for the Brennan Center's Democracy Program, April 6, 2018
Interview, Jason Snead, Heritage Foundation policy analyst, April 6, 2018
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