  A political party can be considered as a company whose value depends on the
voters support i.e. on the percentage of population supporting the party.
Dynamics of the support is thus as a stochastic process with a deterministic
growth rate perturbed by a white noise modeled through the Wiener process. This
is in an analogy with the option modeling where the stock price behaves
similarly as the voters' support. While in the option theory we have the
question of fair price of an option, the question that we ask here is what is a
reasonable level of support that the coalition of a major party (safely above
the election threshold) and a minor party (under or around the election
threshold) should achieve in order the minor party to get one more
representative. We shall elaborate some of the conclusions in the case of
recent elections in Montenegro (June, 2023) which are particularly interesting
due to lots of political subjects entering the race.
