  A general methodology to study public opinion inspired from information and
complexity theories is outlined. It is based on probabilistic data extracted
from opinion polls. It gives a quantitative information-theoretic explanation
of high job approval of Greek Prime Minister Mr. Constantinos Karamanlis
(2004-2007), while the same time series of polls conducted by the company
Metron Analysis showed that his party New Democracy (abbr. ND) was slightly
higher than the opposition party of PASOK -party leader Mr. George Papandreou.
It is seen that the same mathematical model applies to the case of the
popularity of President Clinton between January 1998 and February 1999,
according to a previous study, although the present work extends the
investigation to concepts as complexity and Fisher information, quantifying the
organization of public opinion data.
