Group working to recall Houston mayor says it will start collecting signatures next week Based on the city's current population, members would need to collect more than 63,000 signatures within 30 days just to get the recall on the ballot. admin-truth Posted on 19 hours ago Based on the city’s current population, members would need to collect more than 63,000 signatures within 30 days just to get the recall on the ballot. Post navigation Previous: National Geographic takes on the search for Cleopatra’s lost tomb in new documentaryNext: Booming Texas city is ranked the worst in the state for women