As mentioned before, in the end it does not matter much ias the Seymour path might have a father-daughter branch as a nod to GGGB, if he turns out to be her dad. Which is currently just a theory, but with some probability.
Most of what you attribute to Seymour is path dependent and does not happen on various other routes, e.g. the blackmail. Other things you mention is hearsay, "supposed to be" or stuff Emma tells you ( and at one point she has to admit that she only goes by gutfeeling. What an "evidence"). Especially when it comes to stuff Emma does or tells you, she is a regular drug taking activist, hardly impartial.
It might be cynism speaking, for I have quite some knowledge how local politics function, but Seymour does not even need to resort to election fraud. Compleletly unneeded. There are enough lobbyists and lobby groups he can call on and he will get what he wants. Most parties are "open" to some talk and support.
And when it comes to political activists, there are overwhelmingly just two types. Those who are even more open to "support" than other parties (but are still stinkingly smug) lor the total bone-headed cloudcuckoolanders, who are completely worthless, because they have no idea how reality is and works.