Use this Newmark J-School Accuracy Checklist for Reporters. Make an Accuracy Checklist a part of your reporting process.
Frequent Sources of Error
Source: Carroll, Brian. Writing and Editing for Digital Media. Routledge: 2014.
What Do I Check?
Where do I fact check?
Always ask yourself these questions when trying to verify information:
"subconscious tendency to seek and interpret information and other evidence in ways that affirm our existing beliefs, ideas, expectations, and/or hypotheses. Therefore, confirmation bias is both affected by and feeds our implicit biases. It can be most entrenched around beliefs and ideas that we are strongly attached to or that provoke a strong emotional response." Source: Facing History and Ourselves
How to Thwart Your Confirmation Bias
From Twenty ways to cultivate an open mind, From Overcoming Bias, A Journalist's Guide to culture & context
Some other good checklists to use:
Fact-checking guides relating to politics: