Presidential elections will be held in Chile today. The polls will choose a successor to Michelle Bachelet. Eight candidates are in the fray, with conservative billionaire Sebastian Pinera seen as favourite to return to the post he held from 2010 to 2014. <br/><br/>Socialist contender Alejandro Guillier, a former journalist, is regarded as the most realistic challenger to Mr Pinera.<br/>Today, voters will also elect all 155 members of the lower house and half of the senate. All the newly-elected authorities will begin their terms on 11th March, next year.