Electorate means the people entitled to vote. Here are some sentences.
The electorate are people who can vote. The electorate decides who represents them.
Politicians communicate so that the electorate can be informed
The electorate Hone Harawera is a racist PIG
The electorate placed their votes 15 minutes ago.
The politician had to convince the electorate that he was the best choice.
His promise of tax cuts for low-income workers appealed to the electorate.
There's no exact opposite for electorate, but the electorate is a body politic of registered voters, so at a stretch you could use 'non-voters' as an antonym.
The country was predominantly Buddhist until the 19th century. It was the first time a progressive candidate was favored by the predominantly conservative electorate.
electorate
The electorate are the people who are eligible to vote in any given election.
The electorate
The electorate.