Sources of information may contain bias -- especially political bias. Media can be geared towards one wing or another to meet the ideologies of their readers. Professional journalists and reporters try to adhere to journalistic objectivity where they present the facts and allow the reader to decide. However, even in non-partisan periodicals and scholarly journals you can find opinion and bias. Identifying bias will help you determine if a source is appropriate to use. If the article content is objective and cites factual evidence, it may be a good source even if the publication leans one way or another on the political spectrum.
The following list of resources is not intended to be comprehensive. Do your research to determine if a source leans one way or another.
Find the source of the information you're evaluating. Ask yourself the following questions:
To find the answer to these questions, you need to read the text carefully and you may have to do some background/fact-checking research to help determine if the source is reliable or biased.