Factually speaking, the experience of winter vs. summer amounts of daylight and of DST vs non-DST clock settings varies greatly depending on whether you live at the north or south end of the country and whether you live at the east or west edge of any given time zone. And which time zone, since they are not all of the size and location they ought to be to ideally track with the Sun’s motion. There’s a lot of historical politics embedded in where we have drawn the time zone boundaries.
Unrelated to the above the population and hence the political power is not uniformly distributed across all 16 corners of the 4 US mainland time zones.
Factually again, the farther west you are within a single time zone, the earlier the clock is compared to the Sun. And the farther east in that same time zone, the later the clock is compared to the Sun. And of course down south there’s plenty of sun-up time all year round, whereas up north there simply isn’t enough sun-up time to go around no matter how/when you distribute it versus the clock.
Therefore, the biggest beneficiaries of DST all year are folks who live in the northeast part of their time zone. They are the ones with room to spare in the winter to move the clocks later (and hence sunrise apparently earlier) without it getting too, too wacky- early. And who also have so little daylight in winter that putting it in the most beneficial time of the work / school / recreational day has the greatest payoff.
Those northeasternmost parts of the four time zones correspond to the highly populous urbanized Northeast from, say, Philadelphia up through Boston plus greater Chicago.
The likely political result from all these facts should be clear enough.