"After Tuesday’s contests, no other candidate retains a real chance of capturing the delegates required to win the nomination outright. Mr. Rubio dropped out, Gov. John Kasich of Ohio is too far behind, and Senator Ted Cruz of Texas would need to win the vast majority of the remaining delegates — a near impossibility.
But Mr. Trump still needs to win most of the remaining delegates to avoid a contested convention."
http://www.nytimes.com/interactive/2016/03/16/upshot/trump-cruz-kasich-republican-delegate-lead.html?_r=0
I would love to see it come down to a contested convention, but more and more republicans are beginning to back Trump. The last time I checked it was at 53%.
http://elections.huffingtonpost.com/pollster/polls/yougov-economist-24084
I disagree with the core premise of the article that Trump's odds increase with Rubio out. With Rubio gone, Cruz has a better lane to start getting the plurality in states, and Kasich might actually win whatever state he decides to go all-in on. Trump has an easier time getting a plurality in a wide pool of candidates than he does in a three-way race that will effectively be two-way in a bunch of states.
Trump's position is a lot more precarious than many realize. There's still almost three more months of primaries, with California and its huge # of delegates voting in June. June! NH and Iowa were only six weeks ago.