Rather than a full repeal of the Dickey Amendment, Republicans agree to include a provision in the spending bill to clarify that they never prohibited research on gun violence in the first place.
Political parties at every level of government choose their nominees through primaries. That's the most important decision a party can make—and an organization's most important decisions should be made by members of that organization.
For an alternate party response to an unsavory candidate's nomination, look to the actions taken by Colorado Republicans during the 2010 governor's race.