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Jill for Justice
Jill Karofsky’s victory will be analysed carefully by the presidential projects of Donald Trump and Joe Biden.
The election went ahead in spite of Democrat calls for it to be held off, or held by postal ballot, owing to coronavirus fears.
Wisconsin is anticipated to be vital in the presidential election in November.
Former Vice-President Joe Biden looks set to end up being the Democratic Party challenger to President Trump after his primary competing Bernie Sanders dropped out and backed him.
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The US is now the nation worst struck by the coronavirus pandemic with 554,684 verified cases and 23,608 deaths.