The emails, which were sent to all 168 committee members’ email addresses, offer a rare glimpse at the agitation that is roiling among some in the Republican National Committee at a moment of intense scrutiny of the institution and the party it represents. It also brings to the surface tensions over whether or not McDaniel can or should lead the RNC in this current political climate, with an increasingly undisciplined Trump launching a third presidential run and the party coming to terms with midterm losses that many blame on the former president. McDaniel claims the support of a majority of...