St. Paul’s problems are stark—a struggling downtown, high taxes, anemic housing construction—but none of the mayoral candidates could muster an endorsement from the St. Paul Area Chamber PAC. In 2013, Chris Coleman, a multi-term mayor, got the PAC endorsement. This year, the St. Paul Area Chamber PAC screened four mayoral candidates for a potential endorsement. John Perlich, vice president of government affairs for the St. Paul Area Chamber, didn’t list which members took part in the endorsement decision, but said a quorum was present. Early voting started Friday, so St. Paul residents already are weighing in on their choices.