We’re going to run a series of articles looking at Cobb County and the 2020 General Election in some detail. The numbers in the article are from the current state of the election on the county’s results page. There is a recount in progress, but it is not expected to significantly shift the numbers.

This is part one of that series.

This first installment is just an overview of the bigger picture by comparing the results in the presidential race with one of the U.S. Senate races.

In later articles we’ll dig into the county commission district and precinct levels for various races.

Cobb is clearly a blue county

During the 2016 election when Hillary Clinton received the largest number of votes within Cobb, there was some speculation that those results were nothing more than dislike of Donald Trump among some suburban Republicans, and that the county was still solidly Republican.

The 2020 election dispelled that notion, and shows that Cobb is an increasingly majority Democratic county.

Democrats swept all the countywide seats, in addition to giving President-elect Biden and Democratic senatorial candidate Jon Ossoff the majority of votes from Cobb in their two races.

Let’s compare two maps from the results website. They will give a clear idea also of where Democrats are strong, and where Republicans are strong.

The first is the map of the presidential race, a screenshot from the Cobb County election results web page. If you want to zoom in, find your own precinct, and see more information you can visit the interactive version of this map by following this link.

In the map above, the precincts voting for Joe Biden are in green, and the votes for Donald Trump are in dark blue.

As you can see from the map, Biden’s strength was in South Cobb (including Mableton and Austell) and Powder Springs, Smyrna, Marietta, the City of Acworth and the City of Kennesaw.

Trump’s votes were concentrated in the northwest and northeast corners of the county.

The total votes cast for president was 393,746. Biden received 221,846 or 56.34 percent of the vote, Trump received 165,459 votes or 42.02 percent, and Libertarian candidate Jo Jorgenson received 6,441 or 1.64 percent of the total.

A good test of the effect of Donald Trump’s unpopularity with a segment of Republican voters is to compare the map above with the U.S. Senate race between Jon Ossoff and David Perdue.

The Ossoff-Perdue map above shows that the general trends are similar, but Perdue outperformed his fellow Republican Trump at the edges of northeast Cobb, and in one of the Vinings precincts.

So there is probably at least some percentage of Cobb residents who are Republican voters, but did not vote for Trump, and they seem concentrated in the more affluent parts of the county.

Below are two tables. The first shows the precincts won by Trump. The second the precincts won by Biden. To see a list of precincts with the addresses of their voting sites follow this link.

One precinct, Bells Ferry 02, was an exact tie between Biden and Trump at 1127 each, with 51 votes for Libertarian Jo Jorgenson.

Here are the precincts won by President Trump

Precinct	Trump	Biden	Jorgenson
Acworth 1B	1941	1682	55
Bells Ferry 04	1446	1180	67
Big Shanty 01	827	747	30
Big Shanty 02	1231	1229	38
Cheatham Hill 02	1408	1062	45
Chestnut Ridge 01	1446	1215	40
Davis 01	857	807	40
Dickerson 01	1209	1149	34
Dodgen 01	921	810	41
Durham 01	2283	1179	53
Eastside 01	1335	1200	34
Eastside 02	1698	1601	73
Elizabeth 02	1022	864	26
Elizabeth 03	1226	1014	40
Ford 01	1664	866	34
Frey 01	1287	732	26
Fullers Park 01	1436	1374	38
Garrison Mill 01	1211	1105	37
Gritters 01	1578	1359	73
Harrison 01	1665	816	47
Hayes 01	2014	1216	49
Hightower 01	1858	1640	78
Kell 01	853	690	44
Kemp 01	1023	546	28
Kemp 02	1765	1429	58
Kemp 03	2187	1005	55
Lassiter 01	1613	1316	68
Lost Mountain 01	1711	1259	40
Lost Mountain 02	2305	1227	48
Lost Mountain 03	2588	1735	67
Lost Mountain 04	1313	794	27
Mabry 01	833	538	26
Marietta 2A	943	755	39
Marietta 4A	1080	568	39
Marietta 4C	1294	950	34
Mars Hill 01	1983	743	47
Mars Hill 02	1119	943	59
McCleskey 01	810	609	28
McClure 01	1593	991	51
Mt Bethel 01	1760	1626	64
Mt Bethel 04	1305	1094	42
Murdock 01	1722	1598	62
Nicholson 01	969	843	44
Oregon 01	767	567	19
Palmer 01	1138	859	57
Pine Mountain 01	1779	1041	41
Pine Mountain 02	1750	859	29
Pitner 01	1111	966	51
Pope 01	1349	1173	53
Post Oak 01	1680	1289	47
Rocky Mount 01	1441	1234	46
Roswell 01	2387	2141	61
Roswell 02	1545	1518	54
Shallowford Falls 01	1487	1294	55
Sope Creek 01	970	835	37
Sope Creek 03	1213	1089	21
Timber Ridge 01	1025	1016	34
Vaughan 01	1630	877	59
Willeo 01	1270	1079	45

Here are the precincts won by President-elect Biden

Precinct	Trump	Biden	Jorgenson
Acworth 1A	1919	2037	48
Acworth 1C	1183	2249	59
Addison 01	930	990	36
Austell 1A	638	2683	17
Baker 01	1319	1984	65
Bells Ferry 03	768	871	42
Birney 01	641	1152	28
Birney 02	929	1970	27
Blackwell 01	908	1113	42
Bryant 01	101	1377	10
Bryant 02	244	2816	31
Chalker 01	1349	2467	67
Chattahoochee 01	986	2860	77
Cheatham Hill 03	1599	1645	50
Clarkdale 01	478	764	16
Clarkdale 02	1030	2596	41
Cooper 01	694	2611	28
Dobbins 01	366	1043	26
Dobbins 02	611	1796	43
Dowell 01	1071	1385	54
East Piedmont 01	782	1077	27
Elizabeth 01	722	1721	38
Elizabeth 04	715	1317	37
Elizabeth 05	1103	1168	32
Fair Oaks 02	956	2551	32
Fair Oaks 04	856	1825	38
Harmony-Leland 01	705	3817	44
Kennesaw 1A	750	876	42
Kennesaw 2A	1329	1379	44
Kennesaw 3A	1554	2665	86
Kennesaw 4A	1251	1396	52
Kennesaw 5A	1936	2509	63
Lindley 01	769	2942	58
Mableton 01	1045	2498	51
Mableton 02	534	1416	19
Mableton 03	890	1247	30
Mableton 04	549	710	23
Macland 01	759	2183	30
Marietta 1A	706	1624	57
Marietta 2B	1145	1921	57
Marietta 3A	1455	1735	55
Marietta 3B	241	1119	8
Marietta 4B	683	831	35
Marietta 5A	589	1479	34
Marietta 5B	385	1240	29
Marietta 6A	374	1184	17
Marietta 6B	970	1283	51
Marietta 7A	359	1461	32
McEachern 01	1053	1636	18
Mt Bethel 03	1299	1344	38
Nickajack 01	781	2706	43
North Cobb 01	796	864	34
Norton Park 01	1142	1980	75
Oakdale 01	1130	1891	43
Oregon 02	989	2812	56
Oregon 03	868	2274	48
Oregon 04	895	2325	30
Oregon 05	1217	1835	38
Pebblebrook 01	629	2673	38
Powders Springs 1A	987	2592	45
Powders Springs 2A	463	1806	36
Powders Springs 3A	731	1972	33
Powers Ferry 01	1213	1287	62
Riverside 01	119	997	14
Sandy Plains 01	1117	1192	53
Sewell Mill 01	1334	1481	36
Sewell Mill 03	1249	1859	58
Simpson 01	738	756	22
Smyrna 1A	554	1931	37
Smyrna 2A	849	2791	67
Smyrna 3A	925	2208	63
Smyrna 3B	750	1166	38
Smyrna 4A	1853	2815	93
Smyrna 5A	811	2006	56
Smyrna 6A	1706	2808	95
Smyrna 7A	1367	3785	73
Sope Creek 02	1632	1963	68
Sweetwater 01	867	1439	40
Sweetwater 02	444	1517	28
Terrell Mill 01	1030	2477	62
Vinings 01	700	1598	40
Vinings 02	1441	2962	74
Vinings 03	1002	2236	32
Vinings 04	1296	1350	29
Wade Green 02	1605	1859	70

In future articles we’ll look at more specific numbers at the precinct level, and get a firmer grip on voting preferences across the county.

The second in the series will look at Cobb Board of Commissioners races.