Pressure built on the candidate to withdraw from the presidential campaign as party leaders urged the G.O.P. to shift its focus to down-ballot contests. Republican leaders began to abandon Donald J. Trump by the dozens on Saturday after the release of a video showing him speaking of women in vulgar sexual terms, delivering a punishing blow to his campaign and plunging the party into crisis a month before the election.
The fiery tone of Mr. Trump’s speech on immigration tore a painful new wound in his relationship with the Republican National Committee. The RNC was ready to praise Donald Trump after the speech expecting a compassionate approach to immigration, but after the speech decided not to say anything.