The economy has gone from President Donald Trump's greatest political asset to perhaps his biggest weakness. Unemployment is spiking at an unprecedented rate. Consumer spending is vanishing. And GDP is collapsing. History shows that dreadful economic trends like these spell doom for sitting presidents seeking reelection. The coronavirus recession will cause Trump to suffer a "historic defeat" in November, a national election model released Wednesday by Oxford Economics predicted. The model, which uses unemployment, disposable income and inflation to forecast election results, predicts that Trump will lose in a landslide, capturing just 35% of the popular vote. That's a sharp...