text:  Talk Radio 680 WCVM. With SRN News, I'm Ron Taylor. Nikki Haley, the runner-up to Donald Trump in this year's GOP nomination race, says Democrats need to dump President Biden as their presumptive nominee following his halting debate performance as she reiterated her calls for cognitive testing of all federal candidates. But the former South Carolina governor in Wall Street Journal interviews said Republicans don't assume or shouldn't assume replacing Biden...