With the transparency and public of blockchain, this will really be a big change for elections if applied and that is what people want. But the problem is that politicians don't want this and politics is the darkest thing in this world, they never want things to be transparent or public so they will never let that happen.

Just like bitcoin is a currency that is superior to fiat money in many aspects, but governments and politicians always seek to ban it because they know that it will benefit the people but will threaten the their power. They never let bitcoin become the world's currency.