### Clue: Wrongly attempt to back current Conservative leader — it makes no sense (7)
### Answer: ILLOGIC 
 ### Explanation: Definition: it makes no sense
 ILL(wrongly, as in "ill-gotten gains") + **reversal of**(… to back) GO(an attempt/a try at) + I(symbol for electrical current in physics) + **1st letter of**(… leader) "Conservative".