Compute voting intensity metrics from a set of voting records.
Analyses the distribution of for/against/abstain votes to determine
unanimity, polarization, and margin characteristics.
VotingIntensity metrics, or null if the records array is empty or contains no
valid vote counts (for example, when all records have a total vote count of 0)
Compute voting intensity metrics from a set of voting records. Analyses the distribution of for/against/abstain votes to determine unanimity, polarization, and margin characteristics.