Student or Learner
What' th eprecise meaning of the term " a political arso"?
I agree, context would help a lot. All I can think of is that it's about starting fires for political reasons.
Perhaps a metaphorical arson is meant? Such as releasing damaging stories to the press and causing problems for the politician in question? We use phrases relating to fire in that kind of context a lot, although I don't remember seeing arson used before - but it could well be appropriate if someone did it deliberately.
Meanwhile, back at the topic...