One politician finishing on the way (9)

I believe the answer is:

impending

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'one politician finishing on the way' is the definition.
I can't judge whether this definition defines the answer.

'one politician finishing on' is the wordplay.
'one' becomes 'i' (Roman numeral).
'politician' becomes 'MP' (Member of Parliament).
'finishing' becomes 'ending' ('end' can be a synonym of 'finish').
'on' says to put letters next to each other.
'i'+'mp'+'ending'='IMPENDING'

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(Other definitions for impending that I've seen before include "Looming" , "About to happen" , "coming?" , "Threatening" .)

I've seen this clue in The Times.

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