it is, but in a slightly different way: I know that in Italy every vote equals something like 4 euros from public funds to the party I gave it to. So if I want

it is, but in a slightly different way: I know that in Italy every vote equals something like 4 euros from public funds to the party I gave it to. So if I want to help that party to continue going on by voting it it is the same than giving them ~4 euros (money that come from my taxes). Nothing different from crowdfunding, but public. What's the problem?