Really really informal simulation of the election
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library("hash") | |
# States treated as going democratic with probability 1 | |
DemStates <- hash() | |
.set(DemStates, "WA"=12, "OR"=7, "CA"=55, "NM"=5, | |
"MN"=10, "WI"=10, "MI"=16, "IL"=20, | |
"PA"=20, "MD"=10, "DC"=3, "DE"=3, | |
"NJ"=14, "CT"=7, "RI"=4, "MA"=11, | |
"VT"=3,"ME"=4,"HI"=4, "NY"=29) | |
# States treated as going republican with probability 1 | |
RepStates <- hash() | |
.set(RepStates, "ID"=4, "UT"=6, "WY"=3, "MT"=3, "ND"=3, | |
"SD"=3, "NE"=5, "KS"=6, "OK"=7, "TX"=38, | |
"AZ"=11, "MO"=10, "AR"=6, "LA"=8, | |
"MS"=6, "AL"=9, "GA"=16, "TN"=11, | |
"KY"=8, "WV"=5, "SC"=9, "AK"=3, "IN"=11) | |
# Swing States | |
# First entry in each value of the hash is the electoral | |
# college vote | |
# Second entry is the intrade probability of the state | |
# going democratic | |
SwingStates <- hash() | |
.set(SwingStates, "NV"= c(6, 0.812), "CO"=c(9, 0.762), | |
"IA"=c(6, 0.750), "VA"=c(13, 0.741), | |
"NC"=c(15, 0.370), "FL"=c(29, 0.678), | |
"NH"=c(4, 0.786), "OH"=c(18, 0.779)) | |
# electoral college votes needed to win | |
kCountNeeded <- 538/2 | |
Run.Simulation <- function () { | |
# Returns TRUE if simulation predicts democratic win | |
# ... and FALSE otherwise | |
# treats each state as independent (I know - not true...) | |
dem.count <- sum(values(DemStates)) | |
for (i in keys(SwingStates)) { | |
result <- runif(1) | |
state <- SwingStates[[i]] | |
if (result < state[2]) { | |
dem.count <- dem.count + state[1] | |
} | |
} | |
if (dem.count > kCountNeeded) { | |
return(T) | |
} else { | |
return(F) | |
} | |
} | |
Run.Simulations <- function(count) { | |
# returns portion of simulations that returned a | |
# democratic win | |
i <- 0 | |
total.results <- c() | |
while (i < (count + 1)){ | |
single.result <- Run.Simulation() | |
total.results <- append(total.results, single.result) | |
i <- i + 1 | |
} | |
return(sum(total.results)/count) | |
} | |
Run.Simulations(10000) #=> 0.9894 |
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