Define "accomplished". Voting has achieved many things, but only when the change was understood and supported by an armed populace able and willing to organise in non-systemic ways, and had the sympathy of an elite faction.
Diss, your persona is an obstacle to both one and the other :D You're entertaining, though.
Assassinating politicians is mostly useless in a bureaucratic society.
And buying politicians is easy, but keeping them bought is hard. Blackmail is good, but credible, persistent and organised threats are better.