What is a question about this article? If the question is unanswerable, say "unanswerable".

From the late-1980s onwards, the party adopted free market policies, leading many observers to describe the Labour Party as social democratic or the Third Way, rather than democratic socialist. Other commentators go further and argue that traditional social democratic parties across Europe, including the British Labour Party, have been so deeply transformed in recent years that it is no longer possible to describe them ideologically as 'social democratic', and claim that this ideological shift has put new strains on the party's traditional relationship with the trade unions.

What has strengthened the party's relationship with trade unions?
unanswerable