A19327, it's the 'common phrase' that put me off attempting this one! If 'your jacket' is regarded as such, it seems a bit on the poor side. We could all put two words together and describe them as a 'common phrase', so there are probably lots of anagrams in your collections of letters.
Put it in an anagram engine and "STRONG IDEA" jumped out at me. Depending on the political philosophy of the puzzle creator, you could also try "DANG TORIES". 😄