What does the cryptic crossword clue "'Make do with less': politician ousted to go downhill fast (3)" mean?

The definition is "go downhill fast". The wordplay uses a deletion. SKI (deletion) = SKI; definition: "go downhill fast" The answer is SKI.

'Make do with less': politician ousted to go downhill fast (3)

Guardian Cryptic #28952 | 11 Down | 2022-12-28 flower