Final answer:
Partisanship involves a strong commitment to and identification with a particular political party, often leading to division and a lack of objective evaluation of opposing political views.
Step-by-step explanation:
Partisanship refers to the strong commitment to and identification with a particular political party. It involves supporting and aligning with a party's ideology and candidates, sometimes even without objectively evaluating their positions. Partisanship can lead to division, polarization, and a lack of objective evaluation of opposing political views.