That's Wyden as Wyden, not because he is a Democrat. Some of the strongest proponents of these intelligence authorities, and in many cases the literal authors of bills expanding these powers, have been leading Democrats e.g. Feinstein.
There is no credible version of history where Democrats as a party are not enthusiastic supporters of these surveillance powers. They've been actively complicit the entire time.
There’s still a sizable portion of the party as of right now that is against surveillance powers in a way that doesn’t really exist on the other side.
The Republican Party doesn’t really have an equivalent to a progressive caucus. AOC and Bernie Sanders are highly influential Democratic caucus members on record against state surveillance, with one of those two being a top candidate for the 2028 presidential elections. There is no such dynamic in the Republican Party.
The cynical (wizened) part of me has to wonder how much of Feinstein's support for surveillance maps back to how many of her constituents see the intelligence community as an addressable market.