R: elections to Australian House of Representatives, 1949-2016

AustralianElections {pscl} | R Documentation

## elections to Australian House of Representatives, 1949-2016

### Description

Aggregate data on the 24 elections to Australia's House of Representatives, 1949 to 2016.

### Usage

    data(AustralianElections)

### Format

A data frame with the following variables:

`date`

  date of election, stored using the `Date` class

`Seats`

  numeric, number of seats in the House of Representatives

`Uncontested`

  numeric, number of uncontested seats

`ALPSeats`

  numeric, number of seats won by the Australian Labor Party

`LPSeats`

  numeric, number of seats won by the Liberal Party

`NPSeats`

  numeric, number of seats won by the National Party (previously known as the Country Party)

`OtherSeats`

  numeric, number of seats won by other parties and/or independent candidates

`ALP`

  numeric, percentage of first preference votes cast for Australian Labor Party candidates

`ALP2PP`

  numeric, percentage of the two-party preferred vote won by Australian Labor Party candidates

`LP`

  numeric, percent of first preference votes cast for Liberal Party candidates

`NP`

  numeric, percent of first preference votes cast for National Party (Country Party) candidates

`DLP`

  numeric, percent of first preference votes cast for Democratic Labor Party candidates

`Dem`

  numeric, percent of first preference votes cast for Australian Democrat candidates

`Green`

  numeric, percent of first preference votes cast for Green Party candidates

`Hanson`

  numeric, percent of first preference votes cast for candidates from Pauline Hanson's One Nation party

`Com`

  numeric, percent of first preference votes cast for Communist Party candidates

`AP`

  numeric, percent of first preference votes cast for Australia Party candidates

`Informal`

  numeric, percent of ballots cast that are spoiled, blank, or otherwise uncountable (usually because of errors in enumerating preferences)

`Turnout`

  numeric, percent of enrolled voters recorded as having turned out to vote (Australia has compulsory voting)

### Note

The Liberal National Party of Queensland formed in 2008 after a merger of the Liberal Party and the National Party. In all elections following 2008, they have been categorised under `LP`.

### Source

Australian Electoral Commission. http://www.aec.gov.au.

### References

Jackman, Simon. 2009. Bayesian Analysis for the Social Sciences. Wiley: Hoboken, New Jersey. Example 3.5.

### Examples

    data(AustralianElections)
    attach(AustralianElections)
    alpSeatShare <- ALPSeats/Seats
    alpVoteShare <- ALP2PP/100

    ## log-odds transforms
    x <- log(alpVoteShare/(1-alpVoteShare))
    y <- log(alpSeatShare/(1-alpSeatShare))

    ols <- lm(y~x)   ## Tufte-style seats-votes regression

    xseq <- seq(-4.5,4.5,length=500)
    yhat <- coef(ols)[1] + coef(ols)[2]*xseq
    yhat <- exp(yhat)/(1+exp(yhat))
    xseq <- exp(xseq)/(1+exp(xseq))

    ## seats vote curve
    plot(x=alpVoteShare,
         y=alpSeatShare,
         xlab="ALP Vote Share",
         ylab="ALP Seat Share")
    lines(xseq,yhat,lwd=2)
    abline(h=.5,lty=2)
    abline(v=.5,lty=2)

[Package pscl version 1.5.2 Index]