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R package for accessing ballot-level microdata from the Florida November 2000 general election and computing summaries for ecological inference.
# Work with local files - avoids specifying source= in every call, e.g.:
options(data_dir = "~/florida_2000/")
# Add this to ~/.Rprofile to persist across sessionsWithout this option, all functions download data from the OSF repository.
library(eiballots)
# Browse available races and counties
list_elections()
list_elections(level = "federal")
list_elections(type = "referendum")
list_counties()
# Load raw microdata
lee <- get_county_data("Lee")
df <- get_election_data(c("PRE", "USS"))
# --- Ecological inference summaries ---
# Single race: marginal distributions only (no joint array)
pres <- ei_summary("PRE")
summary(pres)
# Two races: margins + 3-D joint array [precinct x PRE x USS]
obj <- ei_summary(c("PRE", "USS"))
print(obj)
summary(obj)
dim(obj$joint_precinct) # [n_precincts, opts_PRE, opts_USS]
# Three races: 4-D joint array
obj3 <- ei_summary(c("PRE", "USS", "HOS3"))
dim(obj3$joint_precinct) # [n_precincts, opts_PRE, opts_USS, opts_HOS3]
# Extract a 2-race subset from an existing object (no data reload)
obj2 <- obj3[c("PRE", "USS")]
# Convert to eipack wide format
obj_wide <- to_eipack(obj) # margins become a single wide data.frame
obj_back <- to_lphom(obj_wide) # convert back to list format
# Provide data directly (useful for testing or custom subsets)
obj <- ei_summary(c("PRE", "USS"), data = my_data_frame)ei_summary objectei_summary(c("PRE", "USS"))
# $margins - named list of data.frames, one per race (lphom format)
# $PRE: precinct_id | county_id | n_voters | R | D | O | A | I
# $USS: precinct_id | county_id | n_voters | R | D | O | A | I
# (n_voters is identical across races: shared intersection universe)
#
# $joint_precinct - integer array [n_precincts x opts_PRE x opts_USS]
# $joint_total - integer array [opts_PRE x opts_USS] (sum over precincts)
# $meta - list: elections, counties, n_precincts, n_voters,
# opt_levels, format, precinct_info, created_at| Code | Meaning | Treatment |
|---|---|---|
R, D, BauDuf, Y,
… |
Valid vote | Active category |
A |
Abstention (Undervote: voter was eligible, made no choice) | Active category |
I |
Invalid vote (Overvote: mark not counted) | Active category |
NA |
Voter not eligible in this race | Excluded from universe |
The distinction between A, I, and
NA is critical: only NA values define the
universe boundary for ecological inference.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.