As she opened the box and looked at the camera, Collins’ hands and head were trembling. Many aren’t diagnosed with essential tremor until their 40s or 50s, said Shekhawat with the Maine Neurological Society. Collins has said she has had an essential tremor during her entire time in Congress. Harry Nelson, a 72-year-old North Yarmouth Democrat, similarly said he doesn’t hold Collins’ age or tremor against her. Still, Collins’ age and presentation could sway voters in an almost subconscious way, according to Selinger, at Bowdoin.