Money per vote

This is not campaign spending. It divides contributions by votes, and the archive holds what came in, not what went out — a campaign that banked money it never spent looks identical to one that spent everything. A campaign that never reached a ballot has no vote count and is excluded: 89 of 1,718 campaigns. The cheapest end of this list is mostly campaigns that raised almost nothing and still drew thousands of votes, which says more about name recognition and ballot position than about how a campaign was run. Set a minimum raised to compare campaigns that actually fundraised. By-elections also run at much lower turnout than a general election, so they cost more per vote for reasons that have nothing to do with the campaign — filter to one election to compare like with like.