It analyzes the equilibrium timing for launching valid assaults against each other.
Transition matrices are functions of candidates' actions.
Closed form solution is provided. Each candidate aims to maximize own voting rate on the election day. They manage to solidify partisan voters as well as grasp drifting voters. To manipulate the transition of the supporting rates, they either entice voters by own merits or lure voters away from the rival by assaults against him. Assaulting the rival lures undecided voters to own side but also provokes partisan voters for the rival.