As reported by the Chicago Board of Elections.

Unofficial Early Voting – Day by Day – Citywide data through 7:15 p.m., March 7, 2016
Ballots       Date      Sites Open

190 Feb 17 1 site
194 Feb 18 1 site
194 Feb 19 1 site
48 Feb 20 1 site
36 Feb 21 1 site
192 Feb 22 1 site
192 Feb 23 1 site
159 Feb 24 1 site
173 Feb 25 1 site
198 Feb 26 1 site
114 Feb 27 1 site
65 Feb 28 1 site
9,477 Feb 29 51 sites
6,081 Mar 1 51 sites
6,616 Mar 2 51 sites
5,226 Mar 3 51 sites
7,040 Mar 4 51 sites
9,910 Mar 5 51 sites
1,413 Mar 6 14 sites
8,849 Mar 7 51 sites
  Mar 8 51 sites
  Mar 9 51 sites
  Mar 10 51 sites
  Mar 11 51 sites
  Mar 12 51 sites
  Mar 13 14 sites
  Mar 14 14 sites
56,367  Total
 

Unofficial Cumulative: Feb. 17, 2016 through March 7, 2016 – As of 7:15 p.m.
Ward      Early Voting Ballots
 

1 994
2 922
3 1,591
4 1,687
5 1,309
6 1,364
7 1,466
8 1,542
9 1,446
10 994
11 1,562
12 666
13 2,743
14 568
15 333
16 601
17 1,081
18 1,606
19 2,420
20 759
21 1,469
22 421
23 1,250
24 562
25 721
26 623
27 819
28 749
29 1,154
30 538
31 474
32 898
33 831
34 1,787
35 487
36 564
37 942
38 1,157
39 1,277
40 1,138
41 2,024
42 1,131
43 1,217
44 1,152
45 1,164
46 1,043
47 1,567
48 1,448
49 1,155
50 951
Total 56,367