But loads of reported political polls are in the 300 to 500 range. The marginal gain in confidence from 800 to 1100 is quite small.
Also, most national polls include voters from both parties, so only a third or so are Republicans.
With due respect, very few are in the 300-500 range - the smallest in the 500-600 range and all of those are lampooned for how small they are. Most of the big time polls are 1000+.
For example, Gallup and Rasmussen’s daily tracking polls have 1000 as sample….Rasmussen will use 500 for a state poll from time to time, but never national. Major polls, not daily tracking, will be in the 1500-1600 range.