Missouri’s 1st Congressional District Maps

A collection of interactive precinct-level maps exploring the 2024 election results and voter turnout across Missouri’s 1st Congressional District.

General Election (November 2024)

CD1 Presidential Results

Election Type: General | Data: Vote Results
  • Data: 2024 Presidential results (Harris vs Trump) by precinct
  • Colors: Blue=Harris, Red=Trump
  • District view: Core CD1 precincts colored by margin; newly added precincts (from CD2) shown with gold border
  • Context: Outside/removed precincts shown as grey
  • Hover details: Candidate %, vote counts, and margin
CD1 Presidential Results map
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CD2 Race in CD1 Area The Map You Asked For

Election Type: General | Data: Vote Results
  • Focus: CD2 race (Hartmann vs Wagner) in the 37 precincts moved from CD2 into new CD1
  • Colors: Red=Wagner, Blue=Hartmann
  • Context: All other precincts shown as grey only
  • Purpose: Shows the political character of the newly added area
  • Legend: Aggregate Hartmann/Wagner totals across the 37 moved precincts
CD2 Race map
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General Election Turnout

Election Type: General | Data: Turnout
  • Three toggle views:
  • Raw % (YlGn gradient, 0–80%)
  • vs. Average (CD1 avg: 64.2%)
  • Below Average (purple intensity shows ballot deficit)
  • Coverage: Both core and newly added precincts
General turnout map
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Primary (August 6, 2024)

CD1 Democratic Primary Results

Election Type: Primary | Data: Vote Results
  • Data: Democratic Primary results (Bell vs Bush) by precinct
  • Colors: Blue=Bell, Red=Bush
  • Participation: Only core CD1 precincts held this primary
  • Newly added precincts: Shown hatched grey (were in CD2, had no CD1 primary)
  • Hover details: Bell/Bush %, vote counts, and margin
Primary results map
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Primary Turnout

Election Type: Primary | Data: Turnout
  • Three toggle views:
  • Raw % (0–60%)
  • vs. Average (primary avg: 26.7%)
  • Below Average
  • Newly added precincts: Shown grey (held no CD1 primary)
  • Data suppression: Precincts with <10 registered voters shown as light grey
Primary turnout map
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Compare: Primary vs General Turnout

Turnout Comparison

Election Type: Primary vs General | Data: Turnout
  • Four analytical views:
  • Gap: How much higher general turnout was than primary
  • Primary/General Ratio: Share of general voters who also voted in primary
  • Quadrant: Core engaged / General-only / Primary loyalists / Low engagement
  • Filter panel: Explore by candidate vote share and precinct winner
Turnout comparison map
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Shared Features Across All Maps

  • Single CSV data source (CD1_precinct_data.csv)
  • Precincts with fewer than 10 registered voters suppressed to light grey (hover tooltips still work)
  • 2025 and 2023 CD1 boundary overlays
  • Fullscreen and locate controls
  • Three tile layer options: OpenStreetMap, light, and satellite