Indecisive Tories rule shambolically (10)
I believe the answer is:
irresolute
'indecisive' is the definition.
(similar in meaning)
'tories rule shambolically' is the wordplay.
'shambolically' is an anagram indicator.
'tories'+'rule'='toriesrule'
'toriesrule' with letters rearranged gives 'IRRESOLUTE'.
(Other definitions for irresolute that I've seen before include "Hesitating" , "lacking clear purpose" , "Hesitant, uncertain" , "Indecisive" .)