On his Substack, political scientist Emmett Macfarlane offers much good sense on the Senate (as he has done before) and confrontation being set up between a Poilievre government and a Senate full of independent senators -- who owe their seats to Justin Trudeau's new appointment process. Macfarlane's book
Constitutional Pariah is the best book available on the Senate:
my notes on it are here.
Andrew Coyne, meanwhile, suggests the Charter of Rights and the notwithstanding clause may be the prime minister's last best shot as an election issue..