Ballots (Valid) incorrectly aggregated to election level

[bradbeattie]

I think this one has to do with some ridings having multiple candidates in older elections. If we're naively summing up ballots per candidate as our total valid ballots sum, those ballots will be erroneously considered multiple times.

[bradbeattie]

Fractional ballot counts added to address this issue. If a historical riding elected two MPs (e.g. Halifax, Victoria), the LoP would count that as multiple votes for one person (e.g. http://www.lop.parl.gc.ca/About/Parliament/FederalRidingsHistory/hfer.asp?Language=E&Search=Gres&genElection=5&ridProvince=2&submit1=Search).

So to fix this, I've added a Ballots (Fractional) column that divides by the number of seats per riding, typically 1. This brings the number of valid ballots to expected in line with total ballots (below).