(CNN) -- With U.S. Rep. Michele Bachmann of Minnesota making a splash in the Republican presidential campaign while Sarah Palin sits on the sidelines, is Bachmann edging Palin out of the Tea Party's heart? While the former Alaska governor, vice presidential candidate and Fox News commentator is still much loved as a smart, media savvy conservative who breathes fire against President Obama and Democrats, it appears that Tea Party excitement for a Palin presidential run has passed. One activist told CNN that Palin is "overexposed;" another said that unfair political attacks have left her "damaged;" while another said Palin's "high...