They’ve got to have internals on Indiana, Washington, and California
I don’t know about IN or WA, but I saw an analysis that looked at recent polling in CA, drilled down to the district level and said at least 106 of the 172 delegates to Trump.
Possibly but I also think they anticipate, with Donald now the only one who can reach 1237, they will peel off some voters who may have voted for Cruz.
There's a large majority in recent polls who want the nominee to be the leading vote-getter and maybe want to tamp down some of the division out there.