Indiana has voted Republican for president in every election since 1968 except one: Barack Obama carried it by a single point in 2008, the first Democratic win there since 1964 and a result no Democrat has come near since. In 2024 Donald Trump took the state by 19.0 points, up from 16.1 in 2020 — a 2.9-point move that tracked the national shift. The top line is settled, but it sits over two stories. The metropolitan core and the college towns held Democratic; the white working-class northwest, in the economic and media orbit of Chicago, moved the other way — the same realignment running through the country, both faces inside one state.
Lake County is the clearest case. The old steel country of Gary and Hammond on Lake Michigan gave Obama a 34.3-point margin in 2008, then narrowed every cycle since: 30.9 in 2012, 20.4 in 2016, 15.1 in 2020, and 5.6 in 2024 — a 29-point compression in sixteen years, and in raw votes the largest county shift in the state, about 34,600 fewer net Democratic votes against the 2012-through-2020 baseline. The college counties moved against that grain: Monroe, home to Indiana University at Bloomington, held at 27.4 points Democratic, and Tippecanoe, around Purdue at West Lafayette, finished a tenth of a point short of even after backing Obama in 2008.
Indianapolis is the blue island. Marion County voted Democratic by 27.6 points in 2024, almost exactly its 28.4 of 2008, holding while the state around it moved. The suburbs carry the education half of the story: Hamilton County, the degree-heavy ring of Carmel and Fishers north of the city, ran 22.2 points Republican in 2008 and just 6.1 in 2024, a 16-point compression toward the Democrats. Indiana sits below the national line — 38th of fifty in median household income at $71,957 against a U.S. $80,734, and 42nd in college degrees at 29.7 percent. The reddest ground is rural and southeastern: Franklin County voted Republican by 64.4 points.