When the U.S. Senate decides next year whether to confirm Wilbur Ross as secretary of commerce, among the 100 senators voting on his nomination will be eight people whom Ross has supported with a combined $62,100 in campaign contributions since 1990.When Andrew Puzder’s nomination to be secretary of labor goes before the Senate, it will be decided in part by 17 politicians whose campaigns he has supported with more than $150,000.And when senators vote on Betsy DeVos, Donald Trump’s choice for secretary of education, the chamber will include 20 members whom she has supported over the years with contributions totaling $167,300.An analysis of campaign-finance records by the Center for Responsive Politics, a research organization that tracks money in politics, found that of the 13 Cabinet picks Trump has made so far, seven have given a total of more than $455,000 since 1990 to support people who will serve in the next Senate, either directly to their campaigns or to outside groups backing them.