politifact

{puh-lit-i-fakt}
noun
1. An assertion not based in experience or observation, but biased by a political viewpoint;
Something assumed to be true based on one's political affiliation.

2. A conclusion not reached through observation, but by compromising between two disparate political positions.

Related forms:
pol·it·i·fac·tu·al, adjective
pol·it·i·fac·tu·al·ly, adverb

Examples:
During heated political debate, the politifacts tend to fly.
Your argument is based only in politifact.