The most important factors in predicting who will vote are a. ideology and age. b. gender and geography. c. ideology and religion. d. education and income.

The correct answer is d. education and income.<br /><br />Education and income are important factors in predicting who will vote because they can influence an individual's political engagement and participation. Higher levels of education and income are often associated with higher voter turnout, as individuals with more education and higher incomes may have a greater interest in political issues and a stronger sense of civic duty. Additionally, individuals with higher education and income levels may have more resources and time to participate in political activities, such as voting.