Policy debaters rely heavily upon facts.
Their resolutions are always on a matter of policy, law or regulation that is established to govern our conduct in society. Giving the last speech lets the Affirmative answer any arguments that still may be in question. Unlike Policy, The Lincoln-Douglas Debate topic changes every two months. While LD'ers rely more upon philosophy and logic than evidence, they do use some evidence to back up their arguments. Also, Ld'ers don't have partners to rely on, they do the debate all alone.