title: How to find if my data are from poisson distribution
body: <p>I want to ask what ways are useful for finding distribution of my data.
  My data looks like :   City - count of votes for president in the election in this town.</p>
  <p>I´m using R studio for my work and I don´t know, how to find if my data are from Poisson distribution.</p>
  <p>Thanks for help</p>