Election by the state legislature with each chamber voting separately. Special election caused by the death of Senator Cushman Davis on November 27, 1900. Clapp won 43 of 60 votes in the state Senate with Senator Towne receiving 17. Clapp won 94 of 115 votes in the state House with Towne receiving 21. The legislature declared Clapp the duly elected U.S. Senator in a joint convention on January 23, 1901.
Towne became the second U.S. Senator from Minnesota to lose reelection following Democrat James Shields in 1859.
Clapp was an attorney from Fergus Falls and former Attorney General (1887-1893).