Leader of Parliament adopts untruths and fancy footwork (5)
I believe the answer is:
plies
'leader of parliament adopts' is the definition.
I can't tell whether this definition defines the answer.
'untruths and fancy footwork' is the wordplay.
'untruths' becomes 'lies' (lie is a kind of untruth).
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'fancy footwork' becomes 'p' (I can't justify this - if you can you should believe this answer much more).
'lies' after 'p' is 'PLIES'.
Can you help me to learn more?
(Other definitions for plies that I've seen before include "Works steadily (at trade)" , "Works steadily -- ballet steps" .)