Vice President JD Vance has intensified his fundraising efforts as the Republicans’ finance chair, with a busy schedule of events across the country this month. The vice president will be making appearances in key locations such as Nantucket, Mass., Jackson Hole, Wyo., and San Diego, highlighting his commitment to securing financial support for the party’s primary campaign. Vance’s intensified fundraising efforts underscore the competitive nature of the G.O.P. primary race and his strategic focus on financial backing to strengthen his position within the party.