Original sentence: After the 2004 election, Vanderbei and then others made similar maps summarizing the new election.Cartograms developed by Gastner, Shalizi, Newman at the University of Michigan provide another way to convey election results.Robert Vanderbei at Princeton University made the first "Purple America" map after the 2000 presidential election
Edited sentence: After the 2004 election Vanderbei and then others made similar maps summarizing the new election.Cartograms developed by Gastner, Shalizi, Newman  at the University of Michigan provide another interesting way to convey election results.Robert Vanderbei at Princeton University made the first Purple America map after the 2000 Presidential election