EAST SIDE WARDS SOLID FOR JACKSON, REST OF THE CITY UP FOR GRABS: I don't think the mayor's race is close to over. A month is a very long time, and there are about 119,000 Cleveland residents who voted in a presidential election just eleven months ago, but didn't show up to vote on Tuesday. That's an awful big stack of wild cards left to be played in this game.
Even so, the picture below can't be encouraging for the Campbell campaign:

Note that Jackson got more than 50% of the primary votes in every ward from 1 through 10, the largely Black wards which collectively cast half of all votes citywide. Campbell led Jackson in Wards 12 through 21 (except for a virtual tie in Ward 19), but she failed to pull a majority anywhere and ran behind "Other" in every West Side ward (13-21) as well as Collinwood (11).
In other words, Jackson's main base of support looks solid, while the rest of the city looks very much up for grabs. This is very daunting arithmetic for the Mayor, no matter how the turnout grows in November.
(The percentages in the chart are calculated from ward vote totals reported in the Board of Elections's "Unofficial Canvass Report" on Tuesday's election, posted yesterday.)