Vice President-elect Kamala Harris will leave her Senate seat on Monday, but when she’s sworn in to her new office on Wednesday, Harris will take on a very powerful tiebreaking role in the chamber.

WILMINGTON, DE – DECEMBER 23: Vice President-elect Kamala Harris speaks after President-Elect Joe Biden announced Miguel Cardona as his nominee for Education Secretary at the Queen theatre on December 23, 2020 in Wilmington, Delaware. Cardona, the Connecticut Education Commissioner, will face the urgent task of planning to reopen schools safely during the COVID-19 pandemic. (Photo by Joshua Roberts/Getty Images)