When you vote for president, you are also voting for his cabinet, his White House staff, his level of enforcement of the laws on the books, indeed, for his likely executive orders, and for his or her nominations to the U.S. court system, including the Supreme Court.
"The constitution ... is a mere thing of wax in the hands of the judiciary, which they may twist, and shape into any form they please." — Thomas Jefferson to Spencer Roane, 1819
Thomas Jefferson had a unique and slightly odd view of the proper place of the judicial branch in America. He thought of judicial independence as both a strength and a weakness of our system: you want judges that are independent of popular factionalism but you want them to be accountable to the sovereign, to the American people. Jefferson, as portrayed by Clay S. Jenkinson, discusses his concept of judicial balance, his lifelong displeasure with the Supreme Court, and some of the changes that he thinks should be made. He said of life-tenured judges, 'Few die and none resign.'