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What drove Maricopa County Arizonas 2020 to 2024 swing?
How Atlas thought about thisflip_analysis

Question interpretation

Analysis of Maricopa County, Arizona's 2020 to 2024 presidential swing: magnitude, sub-geographic concentration within the county, and demographic composition of the shift.

Ambiguity notes

  • Interpreting 'what drove the swing' as surfacing where the 2020 to 2024 margin shift concentrated within Maricopa (city-level sub-geographies) and across demographic slices; causation cannot be proven from aggregated vote data alone, so the plan produces WHERE-it-concentrated, not WHY.
  • Using the (dem-rep)/total margin convention throughout; 'swing' computed as margin_2024 minus margin_2020.
  • Maricopa flipped D→R between 2020 and 2024 (Biden +2.2 in 2020; Trump won in 2024 by several points), so the flip_analysis section will have a real county-level flip to decompose.

Resolution strategy

  1. 01lookup_geographymaricopa
    Parameters
    {
      "query": "Maricopa County, AZ",
      "preferred_geo_types": [
        "county"
      ]
    }

Plus 2 comparison shapes: containing_state, national.

Data pulls

  • reaggregationmaricopa · 2024, 2020, 2016, 2012, 2008
  • demographicsmaricopa
  • historymaricopa · 2024, 2020, 2016, 2012, 2008
  • similar_peersmaricopa

Sections

  1. 01
    overview
  2. 02
    shape_map
  3. 03
    flip_analysis
  4. 04
    historical_trend
  5. 05
    demographic_lens
  6. 06
    comparison_table

Narrative angle

Headline emphasis. The exact 2020 to 2024 margin swing for Maricopa and which cities within it concentrated the shift

Frame. Maricopa's 2020 to 2024 flip decomposed by sub-geography and five-cycle trajectory.

View raw JSON
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      "type": "overview",
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      "depends_on": [
        "maricopa"
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      "type": "shape_map",
      "ordinal": 2,
      "depends_on": [
        "maricopa"
      ]
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  ],
  "data_pulls": [
    {
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      "cycles": [
        2024,
        2020,
        2016,
        2012,
        2008
      ],
      "shape_label": "maricopa"
    },
    {
      "kind": "demographics",
      "shape_label": "maricopa"
    },
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      "cycles": [
        2024,
        2020,
        2016,
        2012,
        2008
      ],
      "shape_label": "maricopa"
    },
    {
      "kind": "similar_peers",
      "options": {
        "question": "Census places (cities) within Maricopa County, AZ ranked by 2020 to 2024 presidential margin swing toward Republicans, returning margin_2020, margin_2024, swing magnitude, and place population"
      },
      "shape_label": "maricopa"
    }
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      "Causal claims about specific demographic groups 'driving' the swing without numeric evidence from the data",
      "Generic 'Latino shift' or 'suburban realignment' framing without Maricopa-specific numbers",
      "Attributing the flip to a single factor, group, or narrative shortcut"
    ],
    "headline_emphasis": "The exact 2020 to 2024 margin swing for Maricopa and which cities within it concentrated the shift"
  },
  "resolution_strategy": {
    "primary_shape": [
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        "tool": "lookup_geography",
        "params": {
          "query": "Maricopa County, AZ",
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  "confidence_rationale": "Named county with full MV coverage across 5 cycles and a clean D→R flip between 2020 and 2024; sub-geography city breakdown available via Historian city-swing template.",
  "question_interpretation": {
    "summary": "Analysis of Maricopa County, Arizona's 2020 to 2024 presidential swing: magnitude, sub-geographic concentration within the county, and demographic composition of the shift.",
    "ambiguity_notes": [
      "Interpreting 'what drove the swing' as surfacing where the 2020 to 2024 margin shift concentrated within Maricopa (city-level sub-geographies) and across demographic slices; causation cannot be proven from aggregated vote data alone, so the plan produces WHERE-it-concentrated, not WHY.",
      "Using the (dem-rep)/total margin convention throughout; 'swing' computed as margin_2024 minus margin_2020.",
      "Maricopa flipped D→R between 2020 and 2024 (Biden +2.2 in 2020; Trump won in 2024 by several points), so the flip_analysis section will have a real county-level flip to decompose."
    ],
    "question_archetype": "flip_analysis"
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  1. Plan drafted
  2. Shape resolved — maricopa
  3. Section 2 · overview
  4. Section 3 · shape_map
  5. Section 4 · flip_analysis
  6. Section 5 · historical_trend
  7. Section 6 · demographic_lens
  8. Section 7 · comparison_table
Answer readycached

Maricopa's 2020 to 2024 flip decomposed by sub-geography and five-cycle trajectory.

Scroll to read the full answer

Maricopa's 2020 to 2024 flip decomposed by sub-geography and five-cycle trajectory.

from cache$3.13211s
overview02
R+3.5
Lean Score
R+2.0
2020 margin
D+2.2
2024 turnout
59.5%

R+3.5 in 2024, a 5.7-point rightward swing from D+2.2 in 2020 that flipped Maricopa back to the Republican column. 4.56M people in Arizona's largest county, with a lean score of R+2.0 now baselining the five-cycle trajectory. Turnout came in at 59.5%.

high confidence
shape map03
Primary shape
Maricopa
Comparison outlines
3 · AZ
Center
33.62°N, 111.78°W
Zoom
z6
Extent
2.30° × 1.54°

Maricopa County, the Phoenix metro anchor of central Arizona.

flip analysis04

Flipped R from 2020 to 2024. -5.7 points.

From 2020D+2.2
To 2024R+3.5
Net swing, 2020 to 2024-5.7 pts

Maricopa County flipped R in 2024 at R+3.5, reversing D+2.2 in 2020 — 5.7 points rightward, 2020→2024. The 2024 result landed close to 2016's R+2.8, unwinding the Biden-era crossover. Across five cycles, Maricopa has moved from R+10.5 in 2008 and R+10.7 in 2012 to a margin now oscillating within a 5.7-point band around even.

historical trend05

Shifted 7.0 pts right across 16 years.

DR20202008: R+10.52012: R+10.72016: R+2.82020: D+2.22024: R+3.520082024
R+10.5 in 2008, R+3.5 in 2024, shifted 7.0 points right; inflection at 2020.
2008R+10.52012R+10.72016R+2.82020D+2.22024R+3.5
demographic lens06
race composition
white 58.6%Black 5.7%Hispanic 31.2%Asian 4.6%

No comparison geography available.

population
4,559,748
voting-age population
3,465,094
non-Hispanic white (approx.)
27.4%
median household income
$89,300
bachelor's+
36.7%
poverty rate
11.0%
foreign-born
14.5%
  • Direct lookup at county geo_id county:2020:04013.
  • pct_non_hispanic_white is approximate: computed as (pop_white - pop_hispanic) / total_population. PL 94-171 race/ethnicity cross-tabs are not available at block-group resolution.
  • median_age not aggregated at block-group level in v1; returned null.
  • No containing-geography race breakdown available; contrasting_dimension omitted.

Plurality white at 58.6%, Hispanic share 31.2%, 4.56M people. Non-Hispanic white approximation sits at 27.4%, leaving no majority group in the county. Median household income runs $89,300 with 36.7% of adults holding a bachelor's degree and 14.5% foreign-born.

comparison table07
  • Maricopa+7.0 pts
    2016
    R+2.8
    2020
    D+2.2
    2024
    R+3.5
  • Arizona-2.0 pts
    2016
    R+3.5
    2020
    D+0.3
    2024
    R+5.5
  • AZ-9-2.0 pts
    2016
    R+29.1
    2020
    R+25.8
    2024
    R+31.1

AZ-9 is the outlier at R+31.1, roughly 25 points to the right of Arizona's R+5.5. Its 2020→2024 shift of 5.3 points right trails Maricopa's, where the county swung from D+2.2 to R+3.5 — a 5.7-point move right over the cycle. Arizona and Maricopa track within about 2 points of each other in every cycle shown.