Calls for (4)
'calls for' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yeas that I've seen before include "Those voting in favour" , "Votes in favour" .)
(Other definitions for warrants that I've seen before include "Calls for - authorisations" , "Written authorisations as for arrest" , "Rats warn about documents authorising arrest or search" , "They authorise the police to make arrests" , "Justifies" .)