Score Voting Plans - 256 Voters in UK Labor 2010 Elections

This set contains the votes cast by all 266 voters over the 5 leadership candidates for the 2010 UK Labor Runoff elections [https://rangevoting.org/LabourUK2010.html]. The votes are incomplete strict orders which we have posted along with extensions placing all unranked candidates tied at the end and pairwise graphs.Each voter has 31 alternative voting plans and the cost of the plans is derived from the voter preferences from the actual dataset. The dataset also includes a collection of target collective preference indicators to direct the optimization process.