ProgressNow timeline chronicles the year since the Aurora shooting
● January 7, 2013. Holmes returns to court where 911 recordings and videos from the movie theater are presented as evidence. Holmes's defense team maintains that he is mentally ill.
● January 20, 2013. A poll commissioned by the Denver Post finds that "83 percent of Coloradans say they support a state and/or a federal law that requires a background check on anyone who buys a gun, including gun buyers who purchase from a private seller" and "62 percent of Coloradans...support a law to restore a 10-round limit on ammunition magazines."
● February 7, 2013 to March 19, 2013. Bills to close the private sales loophole on background checks as well as limits on high capacity magazines are introduced to the Colorado State Legislature as part of a package of comprehensive gun safety reform bills brought by Democrats.
● February 12, 2013. President Barack Obama declares in his State of the Union address to Congress, "The families of Aurora deserve a vote." That same evening the Colorado House Committee on Judiciary votes 7-4 in favor of limits on high capacity magazines and 7-4 in favor of background checks on private gun transfers.
● February 25, 2013. Fox31 and 9News report that during the floor debate on the bills, Representative Joe Salazar (D-Thornton) and Representative Fields receive death threats because of their support for gun safety measures. A single suspect, Franklin Sain, is arrested for threats against Fields. In a March 4 statement reported by 7News, Sain's attorney claims that Sain was exercising his First Amendment right to free speech.
Quickly following passage of both background checks and limits on high capacity magazines in the Colorado State House, a recall petition is initiated against Representative Mike McLachlan (D-Durango) for his votes on gun safety legislation. Recall petitions against Senator Evie Hudak (D-Westminster), Senator Angela Giron (D-Pueblo) and Senate President John Morse (D-Colorado Springs) quickly follow their votes in the Senate.
● March 4, 2013. Former U.S. Representative Gabrielle Giffords's husband, Mark Kelly, testifies before Colorado's Senate State Affairs committee in favor of background checks on private gun sales. Patricia Maisch, who helped to tackle the Tucson shooter who shot Representative Giffords, testifies before Colorado's Senate Judiciary committee in favor of limits on high capacity magazines.
Opposing gun safety legislation, El Paso County Sheriff Terry Maketa of Colorado Springs accuses Colorado Senate President John Morse of attempting to extort sheriffs' support with a separate funding bill and refuses to uphold the law should the legislature pass gun safety bills. Sheriffs in Weld and Larimer Counties follow suit. It is later revealed that several Colorado sheriffs signed pledges in opposition to gun safety legislation in exchange for the financial support of Rocky Mountain Gun Owners -- an organization whose lobbyist was required to answer ethics charges brought by a Republican lawmaker in the 2013 legislative session.
● March 20, 2013. In the presence of Aurora and Newtown survivors, Governor Hickenlooper signs three gun safety bills.
○ Background checks on private gun transfers
○ Fees for background checks
○ Limits on high-capacity magazines
Magazines are limited to fifteen rounds with exceptions that grandfather ownership of high capacity magazines already in circulation. The magazine bill also allows the manufacture of magazines of more than fifteen rounds in Colorado as a concession to magazine manufacturer Magpul. Magpul, which according to Fox31 had been exploring tax incentives in other states as early as the summer of 2012, decides to leave Colorado anyway.
● March 27, 2013. Holmes's attorneys say he would be willing to plead guilty to avoid the death penalty. Prosecutors dismiss the offer as a ploy.
● April 1, 2013. Prosecutors announce they will seek the death penalty for Holmes in a trial to start in February 2014.
● April 3, 2013. President Barack Obama visits Colorado to highlight Colorado's successful gun safety campaign.
● April 10, 2013. The Hill reports that Senator Joe Manchin (D-W. Va.) and Senator Pat Toomey (R-Pa.) have reached a compromise gun deal that includes background checks on commercial gun sales.
● April 17, 2013. The Washington Post reports that the Manchin-Toomey background checks amendment failed on a vote of 54-46, falling short of the 60 votes needed to move forward. Patricia Maisch, a hero of the Tucson shooting who supports the amendment, is escorted out of the U.S. Capitol when she reacts to the failure of the amendment by yelling "shame on you."
● May 7, 2013. Holmes's attorneys file their intent to change their plea to not guilty by reason of insanity.
● May 17, 2013. Fifty-four Colorado sheriffs file suit in U.S. District Court claiming that Colorado's new gun safety laws "severely restrict citizens' rights to own, use, manufacture, sell, or transfer firearms and firearms accessories." Governor Hickenlooper files a motion requesting an injunction that would legally bind state enforcement of limits on high-capacity magazines to technical guidance issued by Colorado Attorney General John Suthers.
● May 21, 2013. Representative McLachlan recall petitioners fail to turn in the required number of signatures to place McLachlan's name on a special election ballot. Recall petitioners in Senator Hudak's district also fail to turn in the required number of signatures to place her name on a special election ballot.
● June 6, 2013. Weld County Commissioners Sean Conway and Doug Rademacher of Greeley "float" a secession plan for northeastern Colorado citing differences over "oil and gas, gun control, transportation and agriculture" as impetus for the proposal.
● June 18, 2013. Colorado Secretary of State Scott Gessler certifies 10,137 signatures out of more than 16,000 turned in to recall Senate President Morse. A week later, Gessler disqualifies fewer than 1,000 signatures in the recall campaign against Senator Giron, certifying 93.9 percent of the signatures turned in as valid.
● July 3, 2013. A decision regarding the legitimacy of recall petition language for both Senate President Morse and Senator Giron is issued from Deputy Secretary of State Suzanne Staiert. Staiert finds against recall protesters in spite of constitutional language which requires that petitions "demand the election of a successor."
● July 7, 2013. The attorneys representing James Holmes admit he was the shooter inside the Century 16 theater.
● July 10, 2013. Plaintiffs in the lawsuit against the high-capacity magazine ban and the background check law reach an agreement with the governor's office, effectively dropping their assertion that the law limiting high-capacity magazines to fifteen rounds is vague and unenforceable.