File:HallamGraph.png

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Summary edit

DescriptionHallamGraph.png	English: Election results for Sheffield Hallam constituency from its creation in 1885 to the 2017 general election. © Jeremy Atherton 2017. Graph drawn with R
Date	17 August 2005 (original upload date)
Source	Transferred from en.wikipedia to Commons by Sreejithk2000 using CommonsHelper.
Author	The original uploader was JeremyA at English Wikipedia.

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In other languages

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Notes edit

The Background colour indicates the party of the sitting MP at any given year.

Elections held in 1895, 1900, 1916 (by-election) and 1918 do not appear on this graph, at each of these elections a single candidate was elected unopposed (Conservative in 1895, 1900, and 1918, Liberal in 1916). Gaps indicate the missing elections.

Statistics gathered from:

Parties:

Conservative = Conservative Party (1885–1918; 1964–present); Conservative and Liberal Unionist (1922–1959).
Labour = Labour Party
Liberal = Liberal Party (1885–1979); SDP-Liberal Alliance (1983–1987); Liberal Democrats (1992–present).

Data Used:

Year	Conservative	Labour	Liberal	Other
1885.96	54.4		45.6
1886.57	57.8		42.2
1892.57	54.3		45.7
1895.6	unopp
1900.81	unopp
1906.61	50.4		49.6
1910.11	50.9		49.1
1910.97	50.9		49.1
1916			unopp
1918.95	unopp
1922.87	59.4		40.6
1923.93	57.7	23.9	23.4
1924.83	63.7	36.3
1928	53.7	30.8	15.5
1929.41	60.9	39.1
1931.82	77.5	22.5
1935.87	67.3	32.7
1939	61.7	38.3
1945.51	47.1	38.5	7.7	6.7
1950.15	65.1	26.5	8.4
1951.82	70.76	29.24
1955.4	66.23	33.77
1959.77	62.76	26.06	11.18
1964.79	54.95	26.96	18.09
1966.25	51.34	32.49	16.17
1970.46	61.32	31.43	7.25
1974.16	48.95	27.2	23.85
1974.78	49	28.97	22.03
1979.34	54.94	28.84	15.7	0.52
1983.44	50.62	19.72	28.42	1.24
1987.44	46.29	20.38	32.51	0.83
1992.27	45.52	20.15	33.09	1.24
1997.33	33.1	13.5	51.3	2
2001.43	31	12.4	55.4	1.1
2005.34	29.7	12.6	51.1	6.7
2010.35	23.5	16.1	53.4	6.8
2015.35	13.6	35.8	40	10.6
2017.44	23.8	38.4	34.6	3.1

Code:

The graph was produced with R. The following code will reproduce the graph using the data on this page.

library(tidyverse)
library(htmltab)

hallam <- htmltab("https://commons.wikimedia.org/wiki/File:HallamGraph.png",2, rm_nodata_cols = F)
hallam <- as_tibble(hallam)

tidy_hallam <- gather(hallam, "Party", "Votes", 2:5)
tidy_hallam$Year <- as.numeric(tidy_hallam$Year)
tidy_hallam$Party <- as.factor(tidy_hallam$Party)
tidy_hallam$Votes <- as.numeric(tidy_hallam$Votes)

hallam_victor <- tidy_hallam %>% filter(is.na(Votes) == FALSE) %>% group_by(Year) %>% summarize(Party = Party[which(Votes == max(Votes))])
hallam_victor <- hallam_victor %>%
  add_row(Year = 1895.6, Party = "Conservative") %>%
  add_row(Year = 1900.81, Party = "Conservative") %>%
  add_row(Year = 1916, Party = "Liberal") %>%
  add_row(Year = 1918.95, Party = "Conservative") %>%
  arrange(Year)
hallam_victor$start_year <- hallam_victor$Year
hallam_victor$end_year <- c(hallam_victor$Year[-1], 2019)
hallam_victor[1,3] <- 1885

party_colours <- c("#0087DC", "#D50000", "#FDBB30", "dark grey")
names(party_colours) <- levels(tidy_hallam$Party)

ggplot(tidy_hallam) +
  geom_rect(data = hallam_victor,
            aes(xmin = start_year,xmax = end_year, ymin = -Inf, ymax = Inf, fill = Party),
            alpha = 0.35,
            show.legend = F) +
  geom_line(aes(x = Year, y = Votes, colour = Party), size = 0.703) +
  geom_point(aes(x = Year, y = Votes, colour = Party)) +
  geom_hline(yintercept = 100, colour = "black", size = 1.5) +
  geom_vline(xintercept = 2019, colour = "black", size = 1.5) +
  scale_colour_manual(values = party_colours, labels = c("Conservative", "Labour", "Liberal", "Other")) +
  scale_fill_manual(values = party_colours) +
  theme(text = element_text(colour = "black", size = 14),
        axis.text = element_text(colour = "black", size = 11),
        axis.line.x = element_line(colour = "black", size = 0.703),
        axis.ticks.x = element_line(colour = "black", size = 0.703),
        axis.line.y = element_line(colour = "black", size = 0.703),
        axis.ticks.y = element_line(colour = "black", size = 0.703),
        axis.ticks.length = unit(5, "points"),
        panel.grid.major = element_line(colour = "blue", size = 0.5, linetype = 3),
        panel.grid.minor = element_blank(),
        panel.background = element_blank(),
        legend.position = c(.98, .97),
        legend.text = element_text(colour = "black", size = 11),
        legend.title=element_blank(),
        legend.justification = c("right", "top"),
        legend.box.just = "right",
        legend.key = element_blank(),
        legend.background = element_rect(fill = "white", colour = "black"),
        legend.margin = margin(0, 4, 4, 4)) +
  scale_x_continuous(expand = c(0, 0), limits = c(1885,2019), breaks = seq(1890, 2010, 10)) +
  scale_y_continuous(expand = c(0, 0), limits = c(0, 100), breaks = seq(0, 100, 20)) +
  labs(x = "Year", y = "Percentage Vote")

ggsave("HallamGraph.png", device = "png", units = "cm", width = 20, height = 11, dpi = 120)

Licensing edit

	This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers.

	You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
	This licensing tag was added to this file as part of the GFDL licensing update.CC BY-SA 3.0truetrue

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Subject to disclaimers.

Original upload log edit

The original description page was here. All following user names refer to en.wikipedia.

2010-05-07 15:04 JeremyA 945×520× (76489 bytes)
2005-11-28 01:55 JeremyA 945×520× (23661 bytes) another test of background colours
2005-11-28 01:05 JeremyA 945×520× (23331 bytes) testing new background colour
2005-11-28 00:45 JeremyA 945×520× (22261 bytes) minor alterations to graph
2005-11-25 03:33 JeremyA 945×520× (23836 bytes) updated to include all results since 1885
2005-11-04 05:39 JeremyA 945×520× (21367 bytes) Results back to 1931
2005-10-08 00:49 JeremyA 589×337× (22286 bytes) Add 1950 result, cleanup a little
2005-09-05 19:31 JeremyA 589×337× (9915 bytes) Update party colours to better match those used elsewhere on wikipedia
2005-08-21 17:11 JeremyA 589×337× (9906 bytes) correct a minor mistake
2005-08-21 16:43 JeremyA 589×337× (9871 bytes)
2005-08-17 02:24 JeremyA 589×337× (8602 bytes) {{GFDL}}

File history

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	Date/Time	Dimensions	User	Comment
current	04:07, 13 June 2017	944 × 519 (116 KB)	JeremyA (talk \| contribs)	Re-create graph with open source software (R)
	15:32, 9 June 2017	945 × 520 (74 KB)	JeremyA (talk \| contribs)	2017 results added
	15:50, 8 May 2015	945 × 520 (76 KB)	JeremyA (talk \| contribs)	update with 2015 election
	08:01, 5 June 2010	945 × 520 (75 KB)	File Upload Bot (Magnus Manske) (talk \| contribs)	{{BotMoveToCommons\|en.wikipedia\|year={{subst:CURRENTYEAR}}\|month={{subst:CURRENTMONTHNAME}}\|day={{subst:CURRENTDAY}}}} {{Information \|Description={{en\|Election results for Sheffield Hallam constituenc

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File:HallamGraph.png

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Summary edit

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inception

17 August 2005