File:LoughboroughGraph.svg

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Summary[edit]

DescriptionLoughboroughGraph.svg	English: Election results for Loughborough constituency, 1885–2017.
Date	15 June 2017
Source	Own work
Author	JeremyA

Notes[edit]

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

The election held in 1922 does not appear on this graph. Only one candidate (National Liberal) stood at this election and so no votes were cast, the candidate being elected unopposed. A gap in the plot indicates the missing election.

Graph drawn with R.

Parties:

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

Data used:

Year	Conservative	Labour	Liberal	UKIP	Other
1885.96	43.8		56.2
1886.57	50.8		49.2
1892.57	45.9		54.1
1895.6	48		52
1900.81	49.7		50.3
1906.11	42.5		57.5
1910.11	47.1		52.9
1910.97	47.7		52.3
1918.95		34.9	65.1
1922.87
1923.93	31.5	32.5	36
1924.8	39.9	34.9	25.2
1929.41	32.9	40	27.1
1931.82	60.7	39.3
1935.87	42.7	40.6	16.7
1945.51	31.3	53.3	15.4
1950.148	42.5	57.5
1951.9	43	57
1955.5	45.1	54.9
1959.83	39	47.2	13.8
1964.83	38.2	47.7	14.2
1966.33	37	50.2	12.9
1970.5	44.3	45.4	10.3
1974.25	37.4	38.6	24
1974.86	37.2	41.5	18.9		2.4
1979.42	48	39.6	10.7		1.8
1983.5	52.9	23.4	22.2		1.5
1987.5	54.7	24.5	19.7		1.1
1992.33	50.7	32.4	15.1		1.8
1997.42	37.7	48.6	11.8		1.9
2001.5	35.3	49.7	12.8	2.1
2005.42	37.1	41.4	17.9	2.4	1.3
2010.35	41.6	34.5	18.3	1.8	3.9
2015.35	49.5	31.9	4.1	11	3.5
2017.44	49.9	42	3.6	2.7	1.8

Code:

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

  library(tidyverse)
  library(htmltab)
  
  election_graph <- function(pageURL) {
    election <- htmltab(pageURL,
                        which = 2,
                        rm_nodata_cols = F)
    election <- as.tibble(lapply(election, function(x) {gsub("unopp", "100", x)}))
    
    tidy_election <- gather(election, "Party", "Votes", 2:length(election))
    tidy_election$Year <- as.numeric(tidy_election$Year)
    tidy_election$Party <- factor(tidy_election$Party, levels = c("Conservative", "Labour", "Liberal", "Green", "SNP", "UKIP", "Other"))
    tidy_election$Votes <- as.numeric(tidy_election$Votes)
    
    election_victor <- tidy_election %>% filter(is.na(Votes) == FALSE) %>% group_by(Year) %>% summarize(Party = Party[which(Votes == max(Votes))])
    election_victor$Year <- as.numeric(election_victor$Year)
    election_victor$start_year <- election_victor$Year
    election_victor$end_year <- c(election_victor$Year[-1], ceiling(election_victor$Year[length(election_victor$Year)] + 1))
    election_victor[1,3] <- floor(election_victor[1,3] - 1)
    
    tidy_election$Votes <- as.numeric(sapply(tidy_election$Votes, function(x) {gsub(100, NA, x)}))
    
    party_colours <- c("#0087DC", "#DC241F", "#FAA61A", "#008066", "#FFF95D", "#EFE600", "dark grey")
    names(party_colours) <- c("Conservative", "Labour", "Liberal", "Green", "SNP", "UKIP", "Other")
    
    ggplot(tidy_election) +
      geom_rect(data = election_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, color="black", size = 1.5) +
      geom_vline(xintercept = 2019, color="black", size = 1.5) +
      scale_colour_manual(values = party_colours) +
      scale_fill_manual(values = party_colours) +
      theme(text = element_text(color="black", size = 14),
            axis.text = element_text(color="black", size = 11),
            axis.line.x = element_line(color="black", size = 0.703),
            axis.ticks.x = element_line(color="black", size = 0.703),
            axis.line.y = element_line(color="black", size = 0.703),
            axis.ticks.y = element_line(color="black", size = 0.703),
            axis.ticks.length = unit(5, "points"),
            panel.grid.major = element_line(color="blue", size = 0.5, linetype = 3),
            panel.grid.minor = element_blank(),
            panel.background = element_blank(),
            legend.position = c(.98, .97),
            legend.direction = "horizontal",
            legend.text = element_text(color="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(election_victor[[1,3]], election_victor$end_year[length(election_victor$end_year)]), 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")
  }
  
  election_graph("https://commons.wikimedia.org/wiki/File:LoughboroughGraph.svg")
  
  ggsave("LoughboroughGraph.svg", device = "svg", units = "cm", width = 20, height = 11, dpi = 120)

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.

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.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	16:29, 15 June 2017		512 × 282 (42 KB)	JeremyA (talk \| contribs)	User created page with UploadWizard

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