Colorado is currently gripped by a political struggle. It’s one between the governor and state legislature in Denver on one side and populous “home rule” city governments, mainly on the Front Range — such as Colorado Springs.

The state legislature in the past few years has been passing bills that applied to city government policies, which for many years had been the sole province of city mayors plus the City Council.

These new state laws have mainly provided for higher population densities in cities in hopes of generating more low-cost housing (affordable housing).

What is home rule? How did it come about in Colorado? And why is the state legislature in Denver suddenly challenging this long-established urban government concept?

Back in the late 1800s, the state legislature mainly passed laws that governed what happened in Colorado cities. That meant the state representatives and state senators from the city were more powerful politically in city affairs than the local mayor plus City Council.

This conflict was particularly intense in Colorado’s largest city, Denver, which also was the state capital. For example, the Colorado governor and not the Denver mayor appointed the members of the various boards and commissions that made policy for the city.

In 1894 this led to Denver’s famous “City Hall War.” Gov. Davis Waite tried to fire two members of the Denver Fire and Police Board, but they locked themselves in their City Hall offices and refused to leave.

Gov. Waite ordered the state militia to surround City Hall and forcefully remove the two board members, who now were protected by men armed with pistols and rifles who looked ready to fight the state militia.

Cooler heads prevailed, and Gov. Waite ordered the state militia to stand down without a shot being fired. The Colorado Supreme Court sided with the governor, and the two men peacefully left their offices.

But The Denver City Hall War had perfectly illustrated the competition for power between the governor plus the state legislature and local Denver city officials.

Ten years later, in 1904, conditions in Denver were continuing to deteriorate. Saloons and gambling houses were operating at full steam. Political machines were openly buying votes on Election Day that kept corrupt political leaders in office.

Reformers believed a major cause of the trouble was that the governor and the state legislators continued to wield direct control over city affairs.

A reform movement began to develop in Denver to support a state constitutional amendment that would give Denver the right to establish a “home rule” city government.

Rather than being governed by the governor and the state legislature, Denver citizens would adopt a “city charter” that would create their own form of city government tailored directly to their particular needs.

Denver would thus have a wide range of local powers that would inspire citizens to look to city government rather than state government to solve their problems.

It was a major victory for progressive local government when, at the general election in 1904, the Home Rule Amendment for Denver was adopted to the state constitution by Colorado voters.

Then, a subsequent constitutional amendment was adopted that extended home rule powers to Colorado cities other than Denver. Shortly thereafter, all the major cities in Colorado adopted their own city charters and became full-fledged home-rule cities.

The big point is this: the adoption of the state constitutional amendment in 1904 giving home rule powers to all the major cities in the state was the most significant event in the history of local government in Colorado.

Municipal home rule was firmly instituted as the norm rather than the exception in Colorado. The state became well-known nationally for its strong home-rule city governments.

Many people, and that includes people from Colorado, think of Colorado as a land of beautiful snow-capped Rocky Mountains and wide-open, spacious prairies.

In reality, however, Colorado is highly urbanized and the vast majority of its citizens live in cities. That makes the strong home-rule powers of those cities even more significant.

For 120 years after 1904, the strong home-rule powers of Colorado cities were not seriously challenged. The more populous cities in the state were left to govern themselves as the state constitution instructed.

To longtime observers of Colorado state and local government, the recent efforts of the state legislature and the governor to take control of home-rule city zoning and subdivision laws and altering them to favor population densification has been a shock.

More than a century of land-use policy favoring home-rule cities has been sharply challenged in the last few years by Colorado state legislators.

The state legislators argue the shortage of affordable housing in major cities on the Front Range in Colorado has forced the state legislature to step in.

The state legislature has overridden concerns about home rule and created state requirements that residential lots be split in two and apartments be built along major arterial streets despite the zoning.

The final result is that, after a century-and-a-quarter of home-rule protection for Colorado cities in the state constitution, these protections are now being challenged and set aside.

Tom Cronin and Bob Loevy are news columnists who write about Colorado and national politics.