Conversation so far:
What has Romney been doing?
Willard Mitt Romney is an American politician and businessman serving as the junior United States senator from Utah since January 2019
Where has Mitt Romney been active?
He previously served as the 70th Governor of Massachusetts from 2003 to 2007 and was the Republican Party's nominee for President of the United States in the 2012 election.
What are Mitt Romney's political intentions?
When did Mitt Romney run for president?
He was the Republican Party's nominee for President of the United States in the 2012 election.
What has Mitt Romney been doing in Utah?
After re-establishing residency in Utah, Romney announced his campaign for the U.S. Senate seat held by the retiring Orrin Hatch in the 2018 election

Question: Which city does he live in?
Self-contained rewrite: Which city does Mitt Romney live in?