[mgoetzke]

sure .. that is possible. But all bribing is a matter of attenuation. One would want to spend as little money possible to change the outcome. Bribing voters is the most expensive version, one with the highest risk of being found out, and least verifiable. Paying off the people counting in each district is once removed in these risks. Attacking the people up the chain (that sum up many districts) is the next level etc.

At every step of this way, if there is software involved it becomes instantly easier and less risky to influence. Whether it is online voting, voting machines, vote counting software, tabulation software, emailing results upwards etc.