I am thinking about authors like Amartya Sen and Martha Nussbaum, as well as current debates about e.g. negative and positive freedom or liberal and republican notions of freedom. Are there political parties or political leaders that take those ideas and work with them?
Edit: I don't really see how I should edit this, as none of the suggestions Joseph made really fit my question. However, here are some possible answers that would help me:
There is this interview with political figure xy who says that his conception of freedom is much inspired, or even identical to, the liberal notion of negative freedom, as proposed by e.g. Ian Carter and Matthew Cramer.
Or: There is this government, or big governmental institution, that formulated some laws according to the capability-approach of Amartya Sen and Martha Nussbaum. Or Rawls for that matter.
The names really don't matter here. I am interested in persons, institutions, parties etc. who base their decisions/laws/ideologies/whatever on contemporary political philosophy (so Hobbes, Locke, Rousseau et al don't count).