Under proportional representation system, Members of Parliament are usually elected from relatively large, multi-member constituencies.
While this ensures proportionality in parliament, the tradeoff is that it dilutes local representation for smaller communities within the constituency. A small town voter may have a hard time finding a legislator of their constituency to focus on their individual needs because the constituency itself is just too big.
So what strategies do poliitical parties within proportional representation system use to compensate for this gap? For instance, do they set up "local office" as a point of contact between local voters and national legislators? How effective are these strategies in practice?
For the sake of simplicity, lets focus on examples from European countries (e.g. EU member states, Norway, Switzerland, etc). In particular, Netherland is a fascinating example because they use a single, nationwide constituency for parliamentary election.