tag:blogger.com,1999:blog-1542515349699098336.post7757425514532139488..comments2019-05-29T13:47:50.392-07:00Comments on Gallagher Index Made Easy: It's Important and Easy to UnderstandBoyd M L Reimerhttp://www.blogger.com/profile/10720235301095251673noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-1542515349699098336.post-55437938304885684782019-05-29T13:47:50.392-07:002019-05-29T13:47:50.392-07:00Well, it would be nice to have Becker's 'c...Well, it would be nice to have Becker's 'composite Gallagher Index' for the UK based on the four nations, even though these do not have a legal constraint on the number of seats in each such as the Canadian provinces have. The UK is divided into 650 constituencies, with 533 in England, 40 in Wales, 59 in Scotland, and 18 in Northern Ireland. With England having such a predominance (82% of the seats), likely the composite index would be very close to the regular index.<br /><br />For your purposes though, instead of your graphs of seats and votes since 1832 I would encourage you to calculate and graph the number of votes needed to elect one MP, for each party separately. This more dramatically shows the inherent unfairness of FPTP to voters.Maxhttps://www.blogger.com/profile/18198917518319134407noreply@blogger.comtag:blogger.com,1999:blog-1542515349699098336.post-48253601465503752912019-05-29T12:56:14.842-07:002019-05-29T12:56:14.842-07:00That's a complicated Excel file. Also, it has ...That's a complicated Excel file. Also, it has to be online and easy to use.<br /><br />This is for Canada I think:<br />https://iscanadafair.ca/gallagher-index/<br /><br />Basically I don't know what any of this is. I just followed a link on Wikipedia and liked the main idea, but I haven't read anything about it yet. I just don't understand math so I had to find a simple explanation for it.<br /><br />The reason I'm interested in it is because I made some election charts and made a voter vs. seats comparison chart that you can see here:<br /><br />https://public.tableau.com/profile/jurijfedorov#!/vizhome/UnitedKingdomgeneralelections/Votesvs_seats-percentage<br /><br />So I have all that kind of data from Wikipedia. But could use some easy way to get that number. Still, for a single election it's easy or for one election at a time. Just paste in the numbers in such a spreadsheet and it will calculate the number. You can use either percentage numbers or vote numbers. Doesn't matter, it will calculate it automatically. I'm just testing it out here it's not complete:<br /><br />https://docs.google.com/spreadsheets/d/15jllQnW3kANSvHH_du2GwNOrkqhswkWWF4-Qql9RyDo/edit?usp=sharingJurijhttps://www.blogger.com/profile/02629194072843135992noreply@blogger.comtag:blogger.com,1999:blog-1542515349699098336.post-33358235561596876332019-05-29T11:12:07.393-07:002019-05-29T11:12:07.393-07:00As you know, Michael Gallagher's Excel file, w...As you know, Michael Gallagher's Excel file, which includes the formula for calculating the Gallagher Index, is at https://www.tcd.ie/Political_Science/people/michael_gallagher/ElSystems/Docts/Indices.xlsx<br />This can be used in Excel or any clone of Excel such as the free open source LibreOffice since it doesn't require modules.<br />If you calculate Byron Weber Becker's "composite Gallagher Index" for historical Canadian elections and other countries, that would be interesting to post online. I haven't found any such records online except Becker's values for the 2015 election. You might want to write him to ask if he's prepared or published such historical values.Maxhttps://www.blogger.com/profile/18198917518319134407noreply@blogger.comtag:blogger.com,1999:blog-1542515349699098336.post-59006659015743754552019-05-29T07:13:31.357-07:002019-05-29T07:13:31.357-07:00Someone should do this for all elections. I got th...Someone should do this for all elections. I got the data for some elections, but it's not easy to calculate this stuff in Tableau. I think I will have to do it in Excel.Jurijhttps://www.blogger.com/profile/02629194072843135992noreply@blogger.comtag:blogger.com,1999:blog-1542515349699098336.post-47672714994298999222017-05-15T20:36:31.660-07:002017-05-15T20:36:31.660-07:00To put things in perspective: Generally, countries...To put things in perspective: Generally, countries with a long-term average Gallagher Index under 9.0 have what is described as Proportional Representation. Countries without PR usually have a Gallagher Index over 9.0. Therefore, a Gallagher Index is usually a good measure of whether a country gives voters representation (seats in a legislature) in reasonable proportion to how they voted. (There are a few exceptions. For example the Gallagher Index for the whole United States House of Representatives is misleadingly low as a result of the Primary election process that precedes the main election. However, Byron Weber Becker's improved "composite Gallagher Index" mentioned above would show a much higher Index value, demonstrating the inherent dis-proportionality of these U.S. elections within each State, caused by their First-Past-The-Post voting system.)Maxhttps://www.blogger.com/profile/18198917518319134407noreply@blogger.comtag:blogger.com,1999:blog-1542515349699098336.post-58820521759892182982017-05-15T20:17:39.632-07:002017-05-15T20:17:39.632-07:00The Gallagher Index is not itself an election syst...The Gallagher Index is not itself an election system, it is one way to measure the fairness of an election. If a "Proportional Representation" voting system had been in place in 2015, each party would have had seats in close proportion to its share of the vote. For example, the Liberals with 39.47% of the vote would have had closer to 133 seats instead of the 184 which they obtained. (Of course, it goes without saying that if a different voting system had been in place, then the vote percentages might have changed too.)Maxhttps://www.blogger.com/profile/18198917518319134407noreply@blogger.comtag:blogger.com,1999:blog-1542515349699098336.post-53335008021831882112017-02-04T06:11:57.557-08:002017-02-04T06:11:57.557-08:00I am not a mathematician, that is certain, but I a...I am not a mathematician, that is certain, but I am trying to comprehend this Gallagher Index. My one question after first reading the explanation is, "What would have been the end result in regards to the final number of seats in the last Canadian election if this Index method had been in place"? I think it would be easier for someone like myself to grasp the ultimate consequences of implementing such a system if I knew the answer to that. Thank you. edb - poet in my residencehttps://www.blogger.com/profile/03542582760354618862noreply@blogger.com