graded-approval-transferable-vote | Python code to run a proportional representation election

graded-approval-transferable-vote is a Python library. graded-approval-transferable-vote has no bugs, it has no vulnerabilities and it has low support. However graded-approval-transferable-vote build file is not available. You can download it from GitHub.

Graded Approval Transferable Vote (GATV), a PR extension of ER-Bucklin(whole) single-winner. Copyright (C) 2011, Louis G. "Ted" Stern. This code is an independently reimplemented simplification of Jameson Quinn's PR-MCA, AKA Approval Threshold Transferable Vote (AT-TV), to which he retains copyright. Copyright (C) 2011, Jameson Quinn. The main difference is that my version is straight ER-Bucklin, while JQ selects a different candidate from among those whose Bucklin score exceeds the quota. (a) I calculate the rescale factor based on trunc_sums (see below); and (b) My method has options to use four different quotas: Hare; Droop; a fractional version of Droop that is slightly smaller than traditional Droop in some cases, but still preserves the Droop qualities; and Hagenbach-Bischoff, the quota used by Quinn. Because Bucklin is usually interpreted as a ranked scheme, and I use a ratings ballot, with gaps in rating allowed and an approval threshold based on descending rating one unit at a time, I chose a different name to avoid confusion.