Imagine if Dáil eradicated, and Taoiseach elected leaders? (6)
I believe the answer is:
ideate
'imagine' is the definition.
(synonyms)
'if dail eradicated and taoiseach elected leaders?' is the wordplay.
'leaders?' indicates taking the first letters (I've seen 'leaders' mean this).
The initial letters of 'if dail eradicated and taoiseach elected' is 'IDEATE'.
(Other definitions for ideate that I've seen before include "Imagine (psychology), aid tee (anag.)" , "Form a picture of" , "Form in the imagination" , "Fancy" .)