She said the extension is needed to link Evansville to Indianapolis, according to The Herald-Times of Bloomington. She also told the Democratic group that she understood the environmental concerns over the project.
Thompson added that the environment shouldn't be sacrificed in the overall search for economic growth.
On other topics, she said that allowing individuals and small- to medium-sized businesses to buy health insurance as groups would drive down costs, and that the state tax system needs an overhaul.
Challenging Thompson for the Democratic nomination is Indianapolis architect Jim Schellinger.