Final answer:
Woodrow Wilson was the Democratic candidate, Theodore Roosevelt was the Progressive candidate, William Howard Taft was the Republican candidate, and Eugene V. Debs was the Socialist candidate.
Step-by-step explanation:
A. Woodrow Wilson - 2. Democratic
B. Theodore Roosevelt - 4. Progressive
C. William Howard Taft - 3. Republican
D. Eugene V. Debs - 1. Socialist