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Study shows Wisconsin’s April 7 in-person election resulted in explosion of new COVID-19 infections

A new study published on May 18 showed a strong correlation between the April 7 in-person primary election in Wisconsin and an increase in coronavirus infections in the state, bolstering calls for a robust national vote-by-mail system for November.

Researchers at University of Wisconsin-Oshkosh and Ball State University found clear spikes in cases in counties that had the most in-person voting locations on April 7, and found that far fewer new cases were confirmed in counties with widespread absentee ballot voting.

Though public health experts had urged against holding the election due to the risks, the in-person voting was pushed forward by state Republicans, former Vice President Joe Biden, and a last-minute ruling by the U.S. Supreme Court.

The research proves, wrote journalist David Sirota, that the decision to move ahead with in-person voting “ended up spreading a deadly pandemic.”

The economists examined the number of new cases in each of Wisconsin’s 72 counties, and found that more cases were reported in the two to three weeks after the election—the incubation period for Covid-19—in counties with the highest numbers of in-person polling locations.

“When the average number of votes per voting location increases by 100 (a 0.10 unit change), the rate of positive tests in a county rises by roughly 0.034 to 0.035 (3.4 to 3.5 percentage points) two to three weeks after the election,” the researchers wrote.

Meanwhile, the opposite effect was shown in counties that utilized absentee balloting.

“The estimates from absentee ballot voting suggest that every unit increase in absentee ballots (an additional 10,000 absentee ballots), lead to decreases in the positive rate of between 0.07 and 0.08 percentage points two to three weeks after the election,” the study reads.

The research was released two days after a spokeswoman for the state Department of Health Services said that the agency’s official count of COVID-19 cases linked to the election stood at 71. Governor Tony Evers called on the Republican-led state legislature to cancel the in-person election and allow voters to cast absentee ballots, but the GOP rejected the plan.

Hours before the election, the U.S. Supreme Court blocked the state from extending the deadline for absentee voting in what Justice Ruth Bader Ginsberg warned would “result in massive disenfranchisement” as Wisconsin voters were forced to choose between participating in the democratic process or risking their health.

The economists who authored the study urged election officials to consider the widespread use of absentee ballots to avoid new spikes in coronavirus cases after Americans vote in the 2020 elections in November.

“We find a consistent negative relationship between absentee voting and the rate of positive COVID-19 tests,” reads the study. “Given these results, it may be prudent, to the extent possible, that policy makers and election clerks take steps to either expand the number of polling locations or encourage absentee voting for future elections held during the COVID-19 pandemic.”

On social media, Harvard University epidemiologist Eric Feigl-Ding drew attention to the correlation between lower case numbers and more absentee voting.

Sirota noted that the study was released as President Donald Trump claims a vote-by-mail system would invite widespread “voter fraud.”

Contrary to Trump’s efforts to “manufacture concerns” about absentee balloting, Sirota wrote in his newsletter, “Vote by mail systems have not been plagued by fraud and they do not [prefer] one party over the other.”

The study was published days after Wisconsin’s conservative-led state Supreme Court struck down Evers’ stay-at-home order, leading the governor to warn that the state will likely see major spikes in coronavirus cases and deaths in the coming weeks. The state reported its largest single-day increase in cases on May 16, with 502 new infections.

The decisions regarding reopening the state and moving ahead with last month’s election—both made against the advise of experts — show that Wisconsin’s Republican Party is putting “politics over public health,” wrote U.S. Representative Mark Pocan (D-WI) on social media.

The Milwaukee Independent began reporting on what was then referred to as the mysterious “Wuhan Virus” in January. Other local media did not picked-up on the story until many weeks later. Our early features focused on the economic impact, social issues, and health concerns long before other Milwaukee news organizations even mentioned the coronavirus. Over the following months, we have published more than 500 articles about the pandemic and how it has affected the lives of Milwaukee residents. This extensive body of work can be found on our COVID-19 Special Report page, a chronological index of links by month. Our editorial voice remains dedicated to informing the public about this health crisis for as long as it persists.
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