# May 2013 senatorial elections: regional bulwarks and weak areas of senatorial candidates

We compute the percentage of votes per senatorial candidate. We then sum these percentages and divide by the number of senators (33) to obtain the average percentage of votes received by each candidate per region. We also computed the standard deviation from this average. We get the difference between the actual percentage received by each candidate per region and the said average percentage of votes. We divide the result by the standard deviation per region so that the percentage differences are measured in terms of standard deviations. With this result, we can classify regions according to their strength of support for each senatorial candidate using the following color scheme:

red: 1 < s : very strong support (includes s = 1)
yellow: 0 < s < 1: strong support
green: -1 < s < 0: weak support
blue: s < -1: very weak support (includes s = -1) Strength of support for each candidate per region in units of standard deviation from the average percentage of votes obtained by all the senatorial candidates per region About Quirino M. Sugon Jr