More from SPLC on the election:
Along with the hire of Bannon, Trump campaign worker Kellyanne Conway – a pollster often cited by anti-immigrant and anti-Muslim organizations such as the think tank Center for Security Policy and NumbersUSA – was promoted to campaign manager.

Political observers, however, speculate that the hiring of Bannon will further erode hopes within the GOP that Trump will rein in his trademark bombast and “pivot” toward the center.

As the Washington Post reported, Bannon has other ideas:

Bannon, in phone calls and meetings, has been urging Trump for months to not mount a fall campaign that makes Republican donors and officials comfortable, the aides said. Instead, Bannon has been telling Trump to run more fully as an outsider and an unabashed nationalist.