What does the cryptic crossword clue "Slippery politician’s career path? (6,4)" mean?

The definition is "Slippery politician’s career path?". The wordplay uses a cryptic definition. Cryptic definition The answer is GREASYPOLE.

Slippery politician’s career path? (6,4)

Guardian Cryptic #29653 | 18 Across | 2025-03-27 flower