Rich GOP Senate Contenders Face Attacks Over China and Mansions

Republicans boast their rich Senate candidates give them a $100 million advantage in critical races, but Democrats are attacking the baggage the political newcomers are bringing to the contests.

The wealthy Republicans, all endorsed by Donald Trump, include a hedge fund chief executive officer whose firm invested in Chinese weapons makers, a car dealer who sold Chinese-made Buicks and a bank CEO who suggested most nursing home residents aren’t competent to vote. A fourth businessman-turned-candidate lied about a gunshot wound.

The stakes are high. If just one is elected, Republicans are virtually assured of winning the Senate majority and ...