Michele Bachmann, a Representative from Minnesota and a popular political figure among tea party activists (1) has lately received heavy media attention. Though she has not officially announced her candidacy for the GOP Presidential Nominee, she and her staff have made her intentions clear. Media sources publicize news in different ways, making their political biases evident.
"I'm in for 2012 in that I want to be a part of the conversation in making sure that President Obama only serves one term...but I haven't made a decision yet to announce," Bachmann stated. (2) Also, Bachmann and her staff went on an obvious political trip to Iowa, the state of the first caucus, and an important first step in a presidential campaign. Following her trip she stated, "I am very encouraged by what I heard and the level of support that I saw today." (3) These events were covered by multiple news sources, large and small. However, the similarities between their coverage stopped there.

Let's see how our first media source decided to cover the story. In addition to putting an intimidating snap-shot of her on the page (left), the Huffington Post ran an internet article entitled "Michele Bachmann Still Planning On Doing Some President Stuff, Probably" (2); first of all, what kind of a title is that? They seem to make a mockery of what could be argued to be the indecisiveness of Bachmann. The menacing picture and title are not the only bullets they shot. In the very first sentence, the article mentions that Michele Bachmann's "homeland may have been destroyed by capitalism." It seems apparent that this news source has done all it can to subtly, if not blatantly, make Bachmann, the super-conservative Tea Party activist unattractive to the public. Upon reading with a bias-wary eye, one can see the serious left-winged view of this report.
Next, let's see how the famously right-wing FOX news reported on the same story. It states,
"A recent Gallup poll of Republicans found Bachmann had the second-highest positive intensity rating of any of the potential 2012 candidates in the GOP field...in amazing fashion, she now seems to be running her own shadow Republican caucus in which she is speaker, floor leader, whip, and conference chairwoman." (4)
Not only does the poll they site show her as a serious contender, words such as "amazing fashion," put her in a positive light. FOX news shows obvious right wing bias through the rhetoric with which they reported this story.
ABC news also covered this story. They did so differently from these other two sources: they simply stated the facts. (5) This source didn't mock her indecisiveness in the title or suggest that her home state was destroyed by capitalism, nor did it mention her "amazing fashion" or excellent poll data. It simply reported the news: "Rep. Michele Bachmann, the leader of the House Tea Party caucus and a favorite of conservatives, is wading deeper into presidential waters." (5) This time, in my opinion, ABC news seems to have presented this story in the least biased fashion.
The news media are often responsible for the public's introduction to politicians who may later enter the presidential race. Prior to showing interest in a presidential run, few Americans outside of Minnesota knew much of Michele Bachmann. They may have received their first impressions of her through the afore-mentioned reports. The implications of this fact for Bachmann are huge. First impressions can be hard to change; if someone happened to read the Huffington Post article, their first thoughts of Bachmann would probably be negative. In contrast, upon reading the FOX report, they may have an initial good impression.
Media sources often cover the same news differently based on their biases. A source's true colors are shown in the way it presents information, even when that source professes to be "fair and balanced."
Due to the word limit, I was only able to show examples of media bias from three fairly well-known sources. If you're interested in seeing some even more obviously biased and interesting coverage of Michele Bachmann, here are a few more links.
(6) (7) (8)