Politician tucking into a drink gets more intense (4,2)

I believe the answer is:

amps up

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'more intense' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'politician tucking into a drink' is the wordplay.
'politician' becomes 'MP' (Member of Parliament).
'tucking into' means one lot of letters goes inside another.
'drink' becomes 'sup' (to sup is to drink).
'a'+'sup'='asup'
'mp' inserted within 'asup' is 'AMPS UP'.

'gets' acts as a link.

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