Answer:
The president, regardless of how the media portrays him, can work to improve his image by doing charitable things that make him look good instead of the negative things that the media portrays. Perhaps showing his supporters that he is passing legislation that could help lower taxes or creating more jobs for unemployed people of color could help him create a better image for himself because the media will have a much harder time twisting a story like that to be told in a negative light. Also, working with a news company that he trusts to make him seem charitable could help his case significantly.
Some media outlets may portray the president in different manners based on the political affiliation of those that run the company or outlet. A conservative news outlet will do their best to make a liberal/democratic president look bad because they do not agree with the president's ideology or viewpoints. Likewise, a liberal news company may try to spread a conservative president's stories in a negative light. Due to the political standing of certain companies and outlets compared to that of the president, the president may be portrayed in a more positive or negative manner.
Polling conducted by the media can affect the outcomes of elections by convincing voters that a certain candidate will win or has gained significant support. This motivates voters to vote for a candidate based on the polls in order to prevent a certain candidate from taking office or help a candidate that doesn't have much support. Polling by the media can sometimes be inaccurate, but can easily sway elections and influence voter's decisions.
Explanation: I hope this helps :)