If the
lower limit is 0 or less (a negative number), there is no significant
difference between the ballot numbers for
candidates A and B. If the
lower limit is greater than 0 (a positive number), there is
a significant difference between the ballot numbers.

Also included is the probability of candidate A leading candidate
B that is not the result of sampling error. There may not
be a significant difference between the ballot numbers at the 95% confidence level, but the probability of an actual lead
is calculated.

Other calculators:

Sample Size Calculator,
Margin of Error Calculator

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