Republicans said it would be a "dereliction of duty" to punt the appointment to the governor.
If safe lawmakers shoot down politically perilous bills, then vulnerable lawmakers can dodge a tough vote.
"Cities like Denver and states like California are allowing criminal aliens to run loose, to kill, murder, maim or hurt our fellow Americans, " said State Rep. Dave Williams.
Tuesday night's gatherings begin the process of deciding which candidates will represent their parties in a variety races in November.
In light of today's political climate, two prominent Coloradans have left their parties to become independent.
The $1.5 trillion package would provide steep tax cuts for businesses and the wealthy and more modest cuts for middle- and low-income families.
There are winners and losers in the GOP tax bill, including state and local governments, who have a lot at stake too.
While the GOP is nearing the votes it needs for passage without support from Democrats, the measure remains divisive.
In her announcement, Coffman said she was "running to be governor of all four corners of our diverse state."
“I really do feel that this is what Mike Pence is wanting to take us back to — the 1950s,” said Karen Duggan, a member of Indivisible Colorado.