After JD Vance was elected to the Senate from Ohio in 2022, he and his wife bought a five-bedroom house — their third home — for $1.6 million in Alexandria, Va., not far from the Capitol. Their real estate agent told a local magazine that the buyers paid in cash.When Tim Walz was elected governor of Minnesota four years earlier, his family was living in a heavily mortgaged Cape Cod-style house, with one room rented out, about 90 miles from Minneapolis. After moving into the governor’s mansion, they sold the house for $304,000 — less than the asking price.These real...