Although national security issues are a strong suit for McCain , Castellanos said he might need some help if a weakening economy is the central issue in November . CNN projects McCain wins Ohio , Texas , Rhode Island and Vermont . McCain withdraws from race for GOP nomination . CNN : McCain had amassed no support before Tuesday . McCain campaign was largely tipped off last week .
CNN projects McCain wins Ohio , Texas , Rhode Island and Vermont . McCain withdraws from race for GOP nomination . CNN : McCain had amassed no support before Tuesday . McCain campaign was largely tipped off last week .