Susan B Anthony is a popular example of this.

"The warrant charged Anthony with voting in a federal election 'without having a lawful right to vote and in violation of section 19 of an act of Congress' enacted in 1870, commonly called The Enforcement Act. The Enforcement Act carried a maximum penalty of $500 or three years imprisonment."

Source: http://law2.umkc.edu/faculty/projects/ftrials/anthony/sbaaccount.html