John Kasich commented that none of the candidates should have answered the question in the first place.”No, I won’t”, Trump said, noting he has been “treated very unfairly” by the Republican National Committee and party establishment.The salon occurred a week before Wisconsin’s primary, as Trump was prompted to defend his campaign manager, Corey Lewandowski, who was arrested for simple battery after allegedly grabbing a reporter. The pledge has been a mainstay of the Republican presidential race, but after Donald Trump’s increasingly vitriolic and bitter feud with Ted Cruz, Cruz and Kasich have backpedaled on earlier promises that they’d support Trump if he won. Including superdelegates, party leaders who are free to support any candidate, Clinton has 1,712 delegates to Sanders’ 1,004, leaving her shy of the 2,383 it takes to win the nomination.The full story is here.Walker, who briefly was a presidential candidate and considered a top contender for the GOP nomination, dropped out of the presidential race in September with an unheeded call for Republican rivals to consolidate around an alternative to him. But a series of missteps, and the entry of Trump, doomed his candidacy.The GOP frontrunner told CNN’s Anderson Cooper that he will now have to wait to see who the nominee is before deciding if he can support them – assuming the nominee isn’t Donald Trump. Let me just tell you I don’t want his support, I don’t need his support. While Trump has scheduled campaign events throughout the week in the Badger State.When Cooper pointed out that Ted Cruz had not crossed the line in terms of breaking his own pledge of support, The Donald responded, “He doesn’t have to support me”. Am I gonna say he’s doing a great job?Trump and his team have braced for the possibility of a contested convention in recent weeks, as opposing forces have set their sights on denying him the nomination by preventing him from crossing the necessary delegate threshold. The senator, whose wife Mr Trump threatened to “spill the beans” about after a super PAC formed to stop his candidacy ran an ad featuring an old photo of his former model wife, Melania, stopped short of saying he wouldn’t support Mr Trump.