Campaigning for the electorate vote only is an interesting strategy, I wonder how well it will work?
Nah TPM don't care about party votes, they often (always?) win more seats than their party vote share as they often lose the party vote to Labour.
If they expect more seats than their party vote share, then party votes are wasted votes. If they go to another left bloc party, the left bloc are more likely to get into power where TPM can be part of a coalition.