[10][11] Watson spend $262,153 during the campaign which was the highest amount spent by any state legislature candidate in Colorado in that election cycle.

[13][14] Kagan ran for a seat in the Colorado Senate from the 26th district with the Democratic nomination during the 2016 election and defeated Republican nominee Nancy A.

[15][16] Andrew Fish, who later served as the Democratic caucus' deputy chief of staff, worked as Kagan's campaign manager in the 2016 election.

[19] He gave a speech demanding for debate on a resolution seeking to expel Senator Randy Baumgardner for the sexual allegations against him.

After his speech Kagan was accused of using the women's bathroom multiple times by Senators Beth Martinez Humenik and Owen Hill.

[20][21][22] On January 5, a vacancy committee selected Jeff Bridges to replace Kagan in the state senate against three other candidates, including Iman Jodeh.

[24] Kagan endorsed Andrew Romanoff for the Democratic nomination during the 2020 United States Senate election.

[28] He and Representative Lori Saine sponsored legislation to require the videotaping of police interrogations in sexual assault and murder cases in order to prevent false confessions.