Being looked after on the off-chance Republican kicks out Senate's leader (2,4)

I believe the answer is:

in care

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'off-chance republican kicks out senate's leader' is the definition.
I know nothing about this answer so I can't tell whether this works.

'being looked after on' is the wordplay.
'being looked after' becomes 'inca' (I can't explain this - if you can you should believe this answer much more).
'on' becomes 're' (regarding).
'inca'+'re'='IN CARE'

'the' is the link.

Can you help me to learn more?

(Another definition for in care that I've seen is " taken away from parents?".)

I've seen this clue in The Independent.

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