The Democrats are just as eager. “Johnson is villain No. 1 on the Senate map,” Stewart Boss, the national press secretary for the Democrats’ Senate-campaign arm, told me. The Trumpy positions Johnson has taken and his attacks on Biden mean that the senator “should absolutely stand for reelection” so Democrats can have the satisfaction of beating him, a former Biden campaign aide told me, requesting anonymity because the comment wasn’t on behalf of the campaign... When Trump was sworn in, the Wisconsin governor was a Republican; Paul Ryan, a Republican from Janesville, was speaker of the House; and Reince Priebus, a former Wisconsin GOP chair, was White House chief of staff. Now the state’s governor is a Democrat, Ryan has disappeared from public life, and Priebus has passed on a run for office so he can focus on his lobbying business. Trump won Wisconsin in a surprise in 2016, with just a 30,000-vote margin, then lost to Biden by 20,000 votes in November, mostly because he tanked in the suburbs. Wisconsin’s demographics and history suggest that it could also be the perfect territory for the Biden backlash Republicans are hoping will arrive next year. The state’s narrow political divide might make Johnson’s hardline approach seem confusing, politically speaking. Conventionally, this would be the time for a politician to veer bipartisan. Not Johnson. In March, he told a radio show that he wasn’t scared of the Trump supporters who stormed the Capitol, but “might have been a little concerned” if antifa or Black Lives Matter activists had shown up. Two weeks ago, he toyed with nativist replacement theory in a television appearance on Fox Business, asking whether the Biden administration secretly wanted “to remake the demographics of America to ensure that they stay in power forever?”