Electoral Commissioner and Secretary General: 2000-2007
In 2000, Rivera Schatz was named Electoral Commissioner for the pro-statehood New Progressive Party. Two years later, party president Pedro Rosselló named Rivera Schatz as secretary general of the PNP in addition to his current position as electoral commissioner. He served both positions simultaneously until August 1, 2007, when he decided to run for senator.
Senator: 2008-present
Rivera Schatz ran for senator at the PNP primaries where he won a slot in the ballot, receiving the second-most votes. In the 2008 general elections, Rivera Schatz was elected senator. His fellow senators then elected him to be the 14th president of Puerto Rico's Senate. As such, he selected the following persons for his team:
Senate Secretary Manuel A. Torres was nominated by Rivera Schatz and reelected to a second term, becoming the first Senate secretary to serve under two different Senate Presidents
Incumbent Superintendent of the Capitol, Eliezer Velázquez, was nominated by Rivera Schatz and ratified by House Speaker Jennifer González for a second term, a first for a superintendent.
Rivera Schatz was sworn into his post on January 12, 2009. Thomas Rivera Schatz was reelected in 2012 and elected for the third time as a member of the Senate majority in the 2016 election with 10.33% of the "at large" votes, placing him in second place after independent senatorial candidate Dr. José Vargas Vidot and followed by Juan Dalmau of the Puerto Rico Independence Party. Rivera Schatz was elected to a second term as President of the Senate of Puerto Rico starting January 2017. He holds two records, first as the only reelected Senate President during the past 28 years and the only Senate President ever elected as such to non-consecutive terms.
PNP President
On July 22, 2019, Rivera Schatz announced he would succeed Puerto Rican Governor Ricardo Rosselló as head of the New Progressive Party of Puerto Rico. Rosselló announced his intention to resign due to the ongoing controversy surrounding Telegramgate.
Run for Governor
On August 1, 2019, Rivera Schatz and members of the Senate blocked Rosselló's nominated successor Pedro Pierluisi. The same day, Schatz also announced that he will seek the PNP nomination for governor in the 2020 Puerto Rico gubernatorial election.
Personal life
Rivera Schatz and his father are avid collectors of antique cars.