Blonde behind party and somehow leading Conservative - how is Hans Christian Andersen responsible for that? (5,5)

I believe the answer is:

fairy story

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'is hans christian andersen responsible for that?' is the definition.
I can't tell whether this definition defines the answer.

'blonde behind party and somehow leading conservative' is the wordplay.
'blonde behind party' becomes 'fairy' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' is a charade indicator (letters next to each other).
'leading' says to take the initial letters.
'conservative' becomes 'tory' (I've seen this before).
The first letter of 'somehow' is 's'.
'fairy'+'s'+'tory'='FAIRY STORY'

'how' is the link.

Can you help me to learn more?

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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