The Liberals seems to be betting that a majority of voters have become completely desensitized to chronic high deficits, even in the absence of a global recession.  

Trudeau is incapable of reducing spending, so it is unlikely that new defense spending will represent a reallocation of the existing budget but rather new borrowing.  

Further, government revenues may well drop if the real estate sector corrects (see recent Toronto housing data), which has accounted for over a third of recent GDP growth.

Another vote for Sunny Ways in 2019 will mean even higher taxes - hopefully voters can exercise some critical thinking skills to figure out what the Liberals won't tell you.