Final answer:
The last time Ohio voted for the losing presidential candidate was in the 2020 election, when the state's electoral votes went to Donald Trump.
Step-by-step explanation:
The last time Ohio voted for the losing presidential candidate was in the 2020 election when Ohio's electoral votes went to Donald Trump, who lost the election to Joe Biden. Looking back at history, Ohio often plays a pivotal role in presidential elections due to its status as a swing state.
Ohio's electoral votes have been critical for candidates, such as when Republicans nominated Ohio Governor Rutherford B. Hayes in the 19th century or when Ohio was a significant campaign stop for Barack Obama in 2008.
Nevertheless, it's noteworthy that Ohio's influence can vary, and the state's choice does not always align with the eventual winner of the presidency.