Rising grey tide means the future will be "conservative but not necessarily Conservative".

There are more older people everywhere and older people usually have some property and long term relationships to hang onto, a disinclination to riot in the streets, and have a less exalted view of their ability. The school of experience tempers their opinion. This adds up to conservative voting patterns. They may not end up in the Conservative party.  The NDP will be looking a little more conservative each year too.

Seniors hum along now to the rebel rock and roll tunes of my youth.  They often have a smartphone, holiday in other countries, sport a google identity and wear joggers instead of oxfords. Which party will feel like home to these folks?

Rising tide.

As Michael Medved wrote after the US 2012 election:

"Forget 2012: Long-Term Demographic Trends Are Favorable to Republicans.   Democrats may have won this time, but they shouldn’t celebrate for too long—America is growing older fast, and older folks reliably vote Republican."

Some Winnipeg voters.

Seniors are the reliable voters who turn out in all weathers.     From the Elections Canada website:

Turnout steadily increased with age from 38.8% for ages 18–24 to 75.1% for ages 65–74 and then declined to 60.3% for those 75 and older. This same general pattern has been seen in every general election since 2004, when these studies began.