"The right to vote shall not be denied or abridged..."

From The U.S. Constitution 15th Amendment - Boldly Written
Section 1: THE RIGHT OF CITIZENS OF THE UNITED STATES TO VOTE SHALL NOT BE DENIED OR ABRIDGED BY THE UNITED STATES OR BY ANY STATE ON ACCOUNT OF RACE, COLOR, OR PREVIOUS CONDITION OF SERVITUDE. Section 2: THE CONGRESS SHALL HAVE POWER TO ENFORCE THIS ARTICLE BY APPROPRIATE LEGISLATION. My question: To whom do you report what's going on in Florida and other states- who do you tell the law is being broken?