Many newspapers and news magazines have a political perspective or "leaning." This means they are sympathetic to a particular politcal party or outlook.
Having a leaning does not always mean reporting is bad! The degree to which you think a political leaning affects reporting on a particular topic is up to you to decide. Try to get information from multiple sources to help you formulate a judgement.
The links below will help you identify the political leaning of newspapers and magazines.