Final answer:
B. Their emphasis on social and cultural issues
Millennials mostly lean towards the Democratic Party, and their voting behavior is characterized by a focus on social and cultural issues, diminished party allegiance, and independent identification.
Step-by-step explanation:
The Millennial generation's voting behavior is distinct from previous generations in that they are more likely to identify with or lean towards the Democratic Party than older generations, including the Baby Boomers and the Silent Generation. Additionally, Millennials show a diminished interest in party allegiance and are put off by excessive partisanship, often identifying as independents. They prioritize specific issues such as social and cultural ones, which indicates a generational shift in what motivates their political engagement and choices.
Unlike the tendencies observed in older generations, Millennials are not strongly aligned with a single political party, and their engagement with politics is more driven by issue-based concerns rather than party loyalty. This can be seen in the rise of single-issue voters among younger Americans. Campaign strategies and predictions have to adjust to account for these shifts in voter behavior and preferences.