latter section says no expenditure in rspect of any advertisement,brochure,phamplet or like way for any political party will be allowed .
i.e.as per 37(2B)expense done for political party is disallowed.
In 80GGC any sort of expenditure is allowed 100% if mode other than cash ,done for political party.
even if assessee is has his income under head PGBP then also he can get deduction i.r.o such expenditure u/s 80GGC.
WHY? its not same