So Trump is the GOP nominee and is campaigning against who?

Donald J Trump was nominated as the GOP candidate for president this week.  I am not sure however who this man is running against: Is it against Hillary Clinton?  Or is it against Ted Cruz who exercised his constitutional rights to free speech and gave a speech Trump himself approved at the RNC? Or John Kasich who decided not to attend the convention at all?

Apparently he still is fighting against Senator Cruz and Gov Kasich as seen here:

Trump’s feud with Cruz boiled over in prime time on Wednesday, when the Texan refused to endorse Trump during his convention speech, instead urging voters to “vote their conscience” in November. After being criticized for the speech by Republican elites, and even many members of the Texas delegation, Cruz pointed to Trump’s attacks on his wife and father as reasons he felt justified reneging on his pledge to support the Republican nominee, saying he will not get behind Trump “like a servile puppy dog.”

And this ladies and gentlemen is the art of the deal? Not really motivating me or my centrist friends….then there is this:

The Trump campaign waged a separate war with Kasich, whose home state hosted the Republican convention. After Kasich refused to attend the convention, some within the Trump camp began to attack the Ohio governor. During a Bloomberg Politics breakfast on Monday, Trump campaign chairman Paul Manafort called Kasich “petulant” and said he was”embarrassing his party in Ohio” by refusing to back Trump.

Really?  Manafort is this how you are selling your candidate?  Because this is where you are at:  closing the deal.   Not being the very model of a modern major dealbreaker.

But Hillary is the problem you say?  Well Trump and his best people are doing something. Right?  Well this came up yesterday. The mother of Ambassador Chris Stevens asked Trump and the GOP to stop using her son as a campaign tool here.  And the campaign is….not bringing up her litany of dubious actions and behaviors other than Benghazi.  The amount of material out there is amazing so why are they not using this information?
And most importantly why are you not trying to sell your candidate to disaffected democrats and reluctant republicans?