Election workers open mail-in ballots in Phoenix, Arizona. Ballots continue to be counted three days after voters went to the polls for the midterm election. Photograph: Justin Sullivan/Getty Images US president Joe Biden’s Democratic Party is increasingly confident it can hold Senate seats in Arizona and Nevada which would allow it to retain control of the chamber following this week’s midterm elections. Both contests are still too close to call. Results released in the early hours of Friday (Irish time) showed the Democrat senator in Arizona, former astronaut Mark Kelly, increasing his lead over his Republican opponent Blake Masters. In...