If the proportion of voters who are Democrat is 0.6, what is the chance of a Democrat voting?

ume that the entire electorate is either Democrat or Republican. Suppose that the proportion of Democrats who plan on voting in the midterm election is 0.6 and the proportion of Republicans who plan on voting in the midterm election is 0.8. If the proportion of voters who are Democrat is 0.6, what is the chance of someone planning on voting in the midterm election if they are a Democrat?