Local organizers of the 2020 Republican convention in Charlotte this week declined to disclose many financial details beyond the need to raise $70 million to stage the event, but bid documents released by city government late Friday afternoon paint a fuller picture. According to those documents, organizers anticipate expenses totaling $63.6 million, targeting $70 million to allow for contingencies. The figures are based on the city’s previous role hosting the Democrats in 2012.