Joplin’s District 161 since 2012

How the district lines—and its elections—have changed.

Explore every primary and general election in the Joplin-area district, then compare the original 2012 footprint with the lines used today.

8election cycles

2Joplin-area maps

33vote GOP primary margin in 2026

Explore the timeline

Move through every election year

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Democratic winnerRepublican winnerPendingComparison line

What the election history shows

The general elections stayed red. The primaries tell more of the story.

Republicans won every District 161 general election from 2012 through 2024, including three uncontested races. Competitive same-party contests did not appear until 2022—and the 2026 Republican primary was decided by only 33 votes in the official county returns.

2012–2016: little primary competition

Bill White ran unopposed in three Republican primaries; Democrats fielded a candidate only in 2014.

2018–2020: both parties appear

Both parties held District 161 primaries, but every nominee was unopposed within their party.

2022–2026: GOP primaries tighten

Roberts won contested primaries in 2022 and 2024; Ross then won the open 2026 nomination by 33 votes.

2012 map vs. current map

Most of the old Joplin footprint did not carry forward.

Calculated from the Census boundary polygons: about 36% of the 2012–2020 land footprint remains inside today’s district. About half of today’s footprint overlaps the former lines.

2012–2020 footprint retained36%

64% of the former land footprint fell outside the current boundary.

Current footprint overlapping old map51%

49% of the current land footprint was newly added in the 2022 map.

Election color trail

Republican general-election wins—with a recent narrowing

Color strength follows the reported two-party margin. Unopposed years are marked separately.

Method & sources

Built from official boundary files and election returns.

Boundary shapes come from U.S. Census Bureau TIGER/Line files. Election totals are from Missouri Secretary of State returns; the certified 2026 primary totals come from Jasper County. Distances and overlap percentages are calculations from the Census boundary polygons.

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Important: an unopposed election is not treated as proof that 100% of voters preferred one party. Primary percentages are calculated within each party’s ballot, not across all voters. The 2026 general election has not happened and is displayed neutrally.