In 2011, 5280 Magazine ranked Fields 37th on its list of the 50 "most powerful" people in the Denver Metro area, saying she has "gained the type of respect that politicians dream about."

A Democratic vacancy committee then met to select a replacement candidate to appear on the November 2010 General Election ballot.

She entered with the support of then-State House Speaker Terrance Carroll, incumbent Karen Middleton and she was nominated by the committee on the first ballot.

On July 19, 2023, Fields, term-limited at the end of her current term, announced that she was running for the office of Arapahoe County commissioner, District 5.

To combat childhood obesity, she sponsored legislation to require 30 minutes of physical activity a day in Colorado schools.

She also led legislation to authorize the Public Utilities Commission to create a tiered electricity rate for customers with medical conditions.