How do we know? Wall Street Journal details a great story:
Six members of the Paw family, each listing the house at 41 Shelbourne Ave. as their residence, have donated a combined $45,000 to the Democratic senator from New York since 2005, for her presidential campaign, her Senate re-election last year and her political action committee. In all, the six Paws have donated a total of $200,000 to Democratic candidates since 2005, election records show.
That total ranks the house with residences in Greenwich, Conn., and Manhattan's Upper East Side among the top addresses to donate to the Democratic presidential front-runner over the past two years, according to an analysis by The Wall Street Journal of donations listed with the Federal Election Commission.
It isn't obvious how the Paw family is able to afford such political largess. Records show they own a gift shop and live in a 1,280-square-foot house that they recently refinanced for $270,000. William Paw, the 64-year-old head of the household, is a mail carrier with the U.S. Postal Service who earns about $49,000 a year, according to a union representative. Alice Paw, also 64, is a homemaker. The couple's grown children have jobs ranging from account manager at a software company to "attendance liaison" at a local public high school. One is listed on campaign records as an executive at a mutual fund.
The Paws' political donations closely track donations made by Norman Hsu, a wealthy New York businessman in the apparel industry who once listed the Paw home as his address, according to public records. Mr. Hsu is one of the top fund-raisers for Mrs. Clinton's presidential campaign.