Nowadays the internet is a powerful tool for anyone. Politicians take advantage of it as well, and for this reason, all of the alternatives apply.
They use it to generate donations for campaigning, to support the party, and even charitable donations.
They also use it to organize supporters, create communities where they can interact, show support, discuss ideas, etc.
Finally, they also use it to solicit support, showcasing their ideas, trying to reach as many people as possible in order to increase their supporting base.
