Well we knew it was just a matter of time, per The Milwaukee Journal Sentinel

Officials have identified seven people who appear to have contracted COVID-19 through activities related to the April 7 election, Milwaukee Health Commissioner Jeanette Kowalik said Monday.

Six of the cases are in voters and one is a poll worker, Kowalik said.

By the end of this week, officials hope to have additional information on the cases that were reported between April 7 and Monday, she said.