Replacing Scalia

The editorial Senate Republicans Lose Their Minds on a Supreme Court Seat argues that Republicans are being irrational in their attempts to prevent President Obama from nominating a potential replacement for the recently deceased Antonin Scalia.  According to the author, President Obama has the prerogative to nominate a successor to Antonin Scalia - whether or not the Republicans like it.  And whether or not President Obama expects his nominee to be confirmed.
In my opinion the article is well written and well argued.  The author provides links to outside sources to substantiate his opinions, or clarify certain claims.  I appreciate this, as it gives me background on how the author shapes their own political views.  Links tell the reader pertinent information about the issue being discussed, and the sources of this information can tell you a lot as well.  However, this is what leads me to the one problem I have with this editorial, which is that each link takes me to another article published by The New York Times.  A greater variety in source material might make the argument seem a little less one-sided.
That being said, I agree with the author that the president