There could hardly be a starker divide on guns than in Colorado, reports the Washington Post. Metropolitan Denver has been hit by two of the most horrific mass shootings in recent years, Columbine and Aurora. Leave the city and you get to areas where the nearest police officer could be a 20-minute drive and owning a weapon for self-defense becomes more than a talking point. The state legislature is caught up in a bitter struggle over whether to tighten gun laws. While advocates acknowledge the proposals are modest, if enacted they would represent the first gun-control measures adopted in the U.S. interior since the Newtown massacre. It's been more than a decade since Colorado tightened its gun laws. And the outcome of the current battle remains much in doubt. Seven gun-control bills are scheduled for a vote in the state Senate tomorrow. Four of those measures already passed the state House last month by a narrow margin and the Senate vote is expected to be even closer. The fate of the measures in this political swing state could say much about whether the Connecticut killings have fundamentally reshaped the national debate over firearms and how gun-control efforts will fare beyond the state's borders.