This could be done by conferring statehood on any city who chooses it upon achieving a certain minimum population. Each new city/state would gain two new (and probably Socialist) US Senators and would continue to have House representation. They could impose all the restrictive, Socialistic laws they wanted within the city/state limits.
Suburbs and rural areas, however, would not be subject to laws made in these new city/states. They would be free to merge with any other areas as they choose, and subdivide or recombine those areas into smaller states under the same guidelines the cities used. Key factors would be an end to gerrymandering and an increase in the size of the House - approximately tripling the number of Representatives.
US citizenship would entitle anyone to move to and from any of these states, with no tax penalties or other arbitrary restrictions allowed by the states being departed. Red/Blue adherents would have an easier time arranging themselves as they choose.
We would end up with 150 or more states - each possessing a smaller government with more responsiveness to local issues. We would have a Senate with 300 members, but probably little change in the 53/47 percentage existing today. The 1,500 member House would allow new conservative voices a chance to emerge, while minimizing the influence of today's Leftist radicals. Some cities would inevitably become even bigger Leftist hellholes than they are today - but would be subject to immediate abandonment by their tax bases as a penalty for such mismanagement. Many suburban/rural areas near these cities would gain a degree of independence they do not have today.
The Deep State and the buyers of power in DC would despise and fight this plan. They desire the opposite - a small number of compromised politicians making all of the decisions for the nation as a whole.
Smaller doesn't necessarily mean better.
I live in a county with 83 political subdivisions. 83 different sets of rules and regulations. The largest entity has a population of 44,000.
Here is some "responsiveness" on the posting of election campaign signs from a medium sized municipality:
ELECTION SIGNS – During every primary & general election period the Township receives complaints and general inquiries about the placement of candidate/political signs. Shrewsbury Township regulates all signs throughout the year, including the aforesaid. Signs cannot be placed within any road right-of-way (ROW), even if the signs are placed on property with an owner’s permission. What is the ROW? It varies for each road and can vary in different segments of a road. Unless someone wishes to research the ROW for each road, the Township’s general advice to those that ask is that the signs be placed a minimum of 10 feet from the edge of the pavement, or where there are utility poles to place the signs behind the pole line (in most cases the poles are on the ROW line). In all cases permission is to be granted by the private property owner. If the signs are placed on the side of the road where there are no utility poles, use the same setback distance for the poles on the opposite side of the road, or use the 10-foot minimum setback from the edge of the road pavement. Please note that the Township enforces this policy throughout the year for all signs within the road ROW. The signs can be removed by the Township and private property owners without notice and then discarded. Again, this is the policy for Shrewsbury Township, only. Each municipality has its own sign regulations, if any such regulations exist. Specific questions can be directed to the Township Manager, Todd Zeigler, at 717-235-3011 (ext. 106) or by email at manager@shrewsburytownship.org. The sign regulations can also be read online at: https://www.ecode360.com/28322170