Rep. Dyer served 11 terms in office for Missouri's 12th District. During his second term in office, on June 19, 1914, Dyer was suspended from taking his seat in the House of Representatives due to contested voting election returns in 1912 in Missouri's 12th District. According to "The New York Times", Dyer had nothing to do with the voting fraud. The House voted to unseat Dyer, who was active in legislative work, by a 147-to-98 vote. During the vote to oust Dyer, 22 Representatives voted "present", rather than give a vote for or against. By a 126 to 108 vote to replace Dyer, the House seated a Democrat, Michael J. Gill, who took the oath of office.