[eng] In this work we study the partisan voter model, an extension of the voter model in which
each agent has an innate and fixed preference for one of two possible states. We study the model
analytically on the complete graph using mean-field theory. The inclusion of preference implies
the existence of a deterministic solution that does not exist in the classical voter model. In the
mean-field limit, the system evolves to a situation in which agents tend to be in their preferred
state. For a finite number of agents, relevant observables of the model have been studied going
beyond what has been studied in the literature. Importantly, we demonstrate that the average time
to reach one of the consensus states depends exponentially with the system size when it is large.
In addition, we introduce the noisy partisan voter model, which adds idiosyncratic choices to the
previous model. We assess the role that preference plays in the stationary probability distribution
finding a new noise-induced transition. The stationary state of the system passes from a bimodal
to a unimodal distribution through a trimodal distribution.