Donald Trump‘s Saturday rally in Wisconsin underscores his campaign’s effort to strengthen his support among working-class and rural white voters in a crucial battleground state. Since Kamala Harris replaced President Joe Biden at the top of the Democratic ticket over the summer, the former president has seen his support diminish across most demographic groups, reported Reuters. Trump spoke in Mosinee, a town with around 4,500 residents near Wausau. This area is remote from Wisconsin’s major population centers, Milwaukee and Madison. Marathon County, where Mosinee is located, was once a compet…