I should point out that places like Germany do vote for the party, not the person for positions like Parliament. In each region the parties submit slates of people they would put into the positions if they got all of the votes, and then once people vote they get a proportionate number of their slate into actual offices. There are lots of details here, but it is a system that works.
On the other hand, it gives pols plausible deniability that they aren’t getting bought out.