| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,722 | 10,285 | 14,213 | |
| 2020 | R | 4,304 | 10,552 | 15,198 | |
| 2016 | R | 3,758 | 9,697 | 14,204 | |
| 2012 | R | 5,371 | 8,443 | 14,161 | |
| 2008 | R | 7,011 | 8,346 | 15,653 | |
| 2004 | R | 4,315 | 9,480 | 13,931 | |
| 2000 | R | 5,412 | 9,305 | 15,106 | |
| 1996 | R | 5,419 | 8,020 | 15,641 | |
| 1992 | R | 4,757 | 7,421 | 16,237 | |
| 1988 | R | 5,784 | 10,970 | 16,851 | |
| 1984 | R | 5,521 | 12,355 | 17,971 | |
| 1980 | R | 5,838 | 11,500 | 18,274 | |
| 1976 | R | 7,610 | 10,342 | 18,231 | |
| 1972 | R | 5,317 | 12,681 | 18,176 | |
| 1968 | R | 7,142 | 9,441 | 18,318 | |
| 1964 | D | 11,148 | 7,735 | 18,978 | |
| 1960 | R | 8,091 | 11,392 | 19,577 | |
| 1956 | R | 7,594 | 12,624 | 20,299 | |
| 1952 | R | 7,982 | 12,296 | 20,385 | |
| 1948 | D | 10,086 | 9,105 | 19,385 | |
| 1944 | R | 8,615 | 9,788 | 18,506 | |
| 1940 | D | 10,268 | 10,057 | 20,386 | |
| 1936 | D | 10,475 | 8,528 | 19,422 | |
| 1932 | D | 10,987 | 7,980 | 19,248 | |
| 1928 | R | 6,522 | 10,522 | 17,163 | |
| 1924 | R | 5,276 | 9,939 | 17,783 | |
| 1920 | R | 8,194 | 9,545 | 18,314 | |
| 1916 | D | 5,140 | 4,879 | 10,363 | |
| 1912 | D | 4,421 | 1,573 | 9,511 | |
| 1908 | D | 5,234 | 4,700 | 10,344 | |
| 1904 | R | 4,357 | 5,282 | 10,141 | |
| 1900 | D | 4,672 | 4,308 | 9,300 | |
| 1896 | D | 4,851 | 4,392 | 9,369 | |
| 1892 | D | 4,006 | 3,501 | 8,254 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Cass County, anchored by Logansport along the Eel River, delivered an R+46.2 presidential margin in 2024 — among the widest in the state — reflecting the consolidation of rural, manufacturing-heritage communities toward one party over the past decade.
The Democratic margin in Cass County peaked at thirty points in 1912. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was forty-six points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Cass County's median household income of $56,403 sits well below state and national norms, and 13% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of White County and Howard County.