Money offering a right to support party lines? (6)
I believe the answer is:
dollar
'money' is the definition.
(US currency)
'a right to support party lines?' is the wordplay.
'right' becomes 'r' (common abbreviation).
'to support' is a charade indicator (letters next to each other) (in a down clue, some letters hold others up).
'party' becomes 'do' (do is a kind of party).
'lines?' becomes 'll' (two abbreviations for line).
'a'+'r'='ar'
'do'+'ll'='doll'
'ar' after 'doll' is 'DOLLAR'.
'offering' is the link.
(Other definitions for dollar that I've seen before include "Economic factors deployed as 'soft power'" , "Monetary unit - town in Clackmannanshire" , "Australian currency" , "The almighty currency, a buck" , "Standard monetary unit of many countries" .)