Emmerson:      40-50%      50-60%      60-70%      70-80%      80-90% Len Small Republican Louis Lincoln Emmerson Republican The 1928 Illinois gubernatorial election was held on November 6, 1928.

Incumbent two-term Republican Governor Len Small was defeated in the Republican primary.

Republican nominee Louis Lincoln Emmerson defeated Democratic nominee Floyd E. Thompson with 56.76% of the vote.

Primary elections were held on April 10, 1928.