Which of these individuals is a current U.S. Senator from your state?

The individual who is currently a U.S. Senator from the state correlated with the given question is Ron Johnson. He has been serving as a U.S. Senator from Wisconsin and is recognized for his role in the Senate, particularly in committees and legislative initiatives.

Joe Biden, while a prominent political figure and the current President of the United States, was previously a U.S. Senator from Delaware before he assumed the presidency. Kamala Harris is the current Vice President and was formerly a U.S. Senator from California. Nancy Pelosi is a member of the House of Representatives and has served as Speaker of the House, but she is not a U.S. Senator. Thus, Ron Johnson is the only individual listed who fulfills the criteria of being a sitting senator.