Jamaica Electoral Analytics

01

Data Sources

Electoral records displayed by the platform are derived from official Jamaican electoral records and are normalized into a consistent analytical structure.

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Official records

Results are based on official election records rather than polling, projections or partisan estimates.

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Normalized structure

Historical records are normalized so elections can be explored through a common dashboard interface.

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Coverage is disclosed

Missing records are treated as unavailable information, not automatically interpreted as zero.

02

Electoral Geography

The meaning of a geographic level depends on whether the election is parliamentary or local government.

National

Aggregated view across the election records available for the selected election type and period.

Constituency

The formal parliamentary contest unit in a General Election.

Electoral Division

The formal contest unit in Local Government elections. In General Election analysis it is an analytical subdivision rather than a parliamentary seat.

Cluster

A derived analytical grouping based on normalized polling-station location. Clusters are not persisted as formal electoral entities and are not assumed to have continuous historical identity.

Polling Division

The lowest geographic level exposed by the dashboard for detailed result exploration.

03

General vs Local Government

G

General Election

National → Constituency → Electoral Division → Cluster → Polling Division.

Constituency is the formal contest level. Lower levels are used analytically.

L

Local Government

National → Electoral Division → Cluster → Polling Division.

Electoral Division is the formal Local Government contest level.

04

Turnout

Turnout calculations are produced by the platform's shared backend election analytics rather than independently recalculated by individual charts.

Registered electors

The electorate associated with the applicable standard geographic records.

Comparable turnout

When special EPM records are present, the dashboard uses the comparable standard turnout measure for historical analysis.

EPM treatment

EPM votes contribute to party vote totals. EPM electors and votes are excluded from the standard comparable turnout denominator.

05

Vote Share and Margins

Vote share

A party's percentage of valid votes in the selected resolved geography.

Margin

The percentage-point difference between JLP and PNP vote share. Positive values indicate a JLP lead and negative values indicate a PNP lead.

Other

Valid votes cast for candidates or parties outside the two principal party totals displayed separately by the dashboard.

06

Historical Comparison

A

Election A

Earlier election selected as the comparison baseline.

B

Election B

Later election against which changes are evaluated.

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Missing is not zero

If one election lacks usable coverage, the platform does not automatically infer a gain, loss, addition or removal.

Derived geography

Cluster and Polling Division geography is not treated as automatically continuous across different elections unless historical mapping supports that comparison.

07

Interpretation and Limitations

Analytical ≠ formal

A General Election Electoral Division, Cluster or Polling Division is an analytical subdivision and must not be interpreted as a parliamentary seat.

Historical geography

Geographic names and structures can change over time. The platform avoids asserting continuity that is not supported by the source records.

Data availability

The absence of a record means the platform does not currently have usable data for that scope. It does not establish that the event or geography did not exist.