Context

The style I did my remix in is one that has been particularly popular in reason years. Having someone who is not expected to be singing a song sing the song is humorous to many. Politicians are popular targets, since they're well known and never seen in that light (there is an extremely popular YouTube channeled doing this just for Obama). Popular songs are also used because the familiarity with the normal version really throws things together. Sometimes, there are slight parodies of the original with political implications (see references for many examples of what I have just discussed).  I think politicians are a popular target because they have to speak publicly a lot; this provides a lot of audio recordings of them saying a huge array of words (sometimes with transcripts). Some videos include the original singer's voice in addition to the voiceover clips, but I think this detracts from the quality so I opted not to.