Regularly in parliament at the start of the year (5)
I believe the answer is:
daily
'regularly' is the definition.
(I've seen this before)
'parliament at the start of the year' is the wordplay.
'parliament' becomes 'dail' (Dail Eireann, Irish parliament).
'at the start of' indicates taking the first letters (I've seen 'at the start' mean this).
The initial letter of 'year' is 'y'.
'dail'+'y'='DAILY'
'in' is the link.
(Other definitions for daily that I've seen before include "Help" , "Cleaner; every 24 hours" , "paper, of a sort" , "often" , "Every twenty-four hours" .)