Eligible voters who did not have the chance to participate in the recent biometric registration exercise should be able to do so in the next couple of days.The Electoral Commission is opening up centres for a mop up exercise beginning Saturday.The exercise will be conducted in one hundred and eighty-seven centres in eight regions across the country.Meanwhile an advocacy group, Youth Bridge Foundation, is concerned the two-day exercise may not achieve the intended results.Executive Director of the foundation, Seth Oteng told Joy News the EC gave a short notice and also failed to communicate actual venues.