Largest rent increases are in swing states. Will it spell trouble for Biden?

John Pike’s biggest fear is ending up on the street.

For years, the retired 79-year-old Madison, Wisconsin, resident has barely made ends meet, with no discretionary income to speak of. Most of his Social Security check of $1,578 goes toward rent. At $1,220, that's more than 77% of his monthly income. Between the rising cost of food prices since the pandemic and his prescription medication, there’s hardly anything left.

When his lease expires in September, the rent on his apartment, where he’s lived for the past 24 years, will go...