Conversation so far:
who is the current presiding officer of the house
The current House speaker, Democrat Nancy Pelosi of California, was elected to the office on January 3, 2019.
has nancy pelosi served as speaker of the united states house of representatives before
Nancy Pelosi previously served as speaker of the United States House of Representatives from January 4, 2007, to January 3, 2011.

Question: when was the politician first elected to congress
Self-contained rewrite: when was nancy pelosi first elected to congress