This input allows you to control the level of correlation between the state outcomes. When set to zero, the winners in each state are determined independently. When set to 100, then in each simulated election, Obama will win all states having probabilities set higher than a randomly generated threshold, and McCain will win all states having probabilities set below the threshold. This provides the highest level of correlation. Settings in the middle are a mixture, with the candidates winning some but not all of the states that are separated by a randomly-generated threshold. When attempting to predict an election based on potential changes to the candidates' support over time, a higher correlation is appropriate because support tends to rise or fall in all states at the same time, i.e., it is correlated. (Hide)