Brazilian elections: voting for a scaling democracy
  The proportional elections held in Brazil in 1998 and 2002 display identical statistical signatures. In particular, the distribution of votes among candidates includes a power-law regimen. We suggest that the rationale behind this robust scaling invariance is a multiplicative process in which the voter's choice for a candidate is governed by a product of probabilities. 
R. N. Costa Filho, M. P. Almeida, J. E. Moreira, J. S. Andrade Jr