I agree with Peter. All political parties across the U.K. are signed up to the idea that poverty needs to be reduced and/or eradicated. The Labour government has set its stall out that it should be judged on how well it does, and other parties have responded by taking poverty seriously and testing the government on its claims.
Particularly since David Cameron came in, there has been a dramatic change to the Conservative Party's attitude towards poverty, in that they seem to be willing to pursue rigorous anti-poverty policies, whereas in the past they may not have prioritized that issue.
In the regional assemblies the Welsh nationalists and the Scottish nationalists all give high priority to anti-poverty promises, as do the Northern Ireland parties.