Trump campaign holds organizing call with Pennsylvania delegate candidates

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  • The call was organized so that the delegates "knew they had the support of the campaign"
  • Topics included campaign basics, including how to deal with rain on Tuesday.

(CNN)A senior adviser to Donald Trump held an organizing call with the campaign's Pennsylvania delegate candidates Sunday night, another sign of the Trump operation's increasingly sophisticated ground game.

Paul Manafort, the campaign's convention guru, ran the call and talked to all 41 of Trump's congressional district delegate candidates in Pennsylvania ahead of Tuesday's crucial primary.
    The call was organized so that the delegates "knew they had the support of the campaign and its senior leadership team," a source on the call told CNN.
    Manafort took questions from the group, including basics such as what the delegates should do in case of rain on Tuesday, two Trump delegates on the call told CNN.
    Pennsylvania has complicated delegate rules. There are 71 delegates at stake on Tuesday, but only 17 of those are winner-take-all statewide delegates. The rest of the delegates will be elected at the congressional level and won't be bound to a candidate but will likely favor one.