Critics say midterm elections will be a burden on Obama and his leadership . Barack Obama seeks to shore up embattled senators from California , Nevada , Texas . Obama is on a six - state , four - day tour . Boxer has opened a slight lead against Republican Carly Fiorina , as has Brown in his effort to win his old job back in a nasty battle with Republican Meg Whitman . Obama will also make another campaign swing the final weekend before midterms .
Critics say midterm elections will be a burden on Obama and his leadership . Barack Obama seeks to shore up embattled senators from California , Nevada , Texas . Obama is on a six - state , four - day tour . Obama will also make another campaign swing the final weekend before midterms .