Abacus:
LPC 34
CPC 32
NDP 16
Bloc 8
GPC 8
PPC 2
https://abacusdata.ca/final-abacus-2019-canada-election-poll/
There's no good reason for NDP support to be beginning to slip at the end. None.
Some people make the decision to vote "strategically" at the 11th hour, and will indicate a non-strategic voting intention to pollsters prior to that point.
Heck, some people make a "strategic" vote in the privacy of the voting booth, having fully intended to make a non-strategic vote when they left the house.