2020 Primary Election Turnout

Calculated as a percentage of active voters

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County	Active voters	Ballots cast	Turnout %
Adams	265,824	100,672	37.87%
Alamosa	8,827	4,550	51.55%
Arapahoe	382,958	170,165	44.43%
Archuleta	9,592	4,770	49.73%
Baca	2,570	1,351	52.57%
Bent	2,571	1,168	45.43%
Boulder	217,243	118,997	54.78%
Broomfield	48,086	24,685	51.34%
Chaffee	13,845	7,678	55.46%
Cheyenne	1,237	667	53.92%
Clear Creek	7,172	3,228	45.01%
Conejos	4,916	2,810	57.16%
Costilla	2,466	1,475	59.81%
Crowley	2,009	1,129	56.20%
Custer	3,753	2,141	57.05%
Delta	20,461	10,282	50.25%
Denver	427,035	213,846	50.08%
Dolores	1,526	744	48.75%
Douglas	241,454	102,263	42.35%
Eagle	31,458	12,765	40.58%
El Paso	417,743	170,036	40.70%
Elbert	19,762	8,588	43.46%
Fremont	28,072	13,292	47.35%
Garfield	33,878	15,060	44.45%
Gilpin	4,477	1,992	44.49%
Grand	10,789	4,719	43.74%
Gunnison	11,378	5,363	47.13%
Hinsdale	663	372	56.11%
Huerfano	4,753	2,738	57.61%
Jackson	966	539	55.80%
Jefferson	401,909	193,185	48.07%
Kiowa	973	398	40.90%
Kit Carson	4,363	2,218	50.84%
La Plata	37,793	16,631	44.01%
Lake	4,347	1,721	39.59%
Larimer	236,586	109,691	46.36%
Las Animas	9,065	4,068	44.88%
Lincoln	2,900	1,358	46.83%
Logan	11,464	5,470	47.71%
Mesa	97,391	46,769	48.02%
Mineral	764	459	60.08%
Moffat	7,892	3,712	47.03%
Montezuma	16,989	8,814	51.88%
Montrose	26,601	13,276	49.91%
Morgan	15,794	6,294	39.85%
Otero	11,222	4,742	42.26%
Ouray	4,092	2,611	63.81%
Park	13,237	6,412	48.44%
Phillips	2,678	1,291	48.21%
Pitkin	12,856	5,472	42.56%
Prowers	6,391	2,448	38.30%
Pueblo	101,452	43,243	42.62%
Rio Blanco	4,016	2,321	57.79%
Rio Grande	6,914	3,652	52.82%
Routt	17,661	8,093	45.82%
Saguache	3,888	1,906	49.02%
San Juan	605	238	39.34%
San Miguel	5,531	2,445	44.21%
Sedgwick	1,606	748	46.58%
Summit	19,839	8,212	41.39%
Teller	17,579	8,527	48.51%
Washington	3,094	2,049	66.22%
Weld	183,662	72,214	39.32%
Yuma	5,556	2,751	49.51%
Total	3,524,194	1,601,524	45.44%

Calculated as a percentage of registered voters

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County	Registered voters	Ballots cast	Turnout %
Adams	297,524	100,672	33.84%
Alamosa	10,389	4,550	43.80%
Arapahoe	439,431	170,165	38.72%
Archuleta	11,179	4,770	42.67%
Baca	2,916	1,351	46.33%
Bent	3,202	1,168	36.48%
Boulder	246,256	118,997	48.32%
Broomfield	54,260	24,685	45.49%
Chaffee	16,039	7,678	47.87%
Cheyenne	1,398	667	47.71%
Clear Creek	8,290	3,228	38.94%
Conejos	5,372	2,810	52.31%
Costilla	2,850	1,475	51.75%
Crowley	2,274	1,129	49.65%
Custer	4,239	2,141	50.51%
Delta	22,735	10,282	45.23%
Denver	496,505	213,846	43.07%
Dolores	1,849	744	40.24%
Douglas	264,463	102,263	38.67%
Eagle	36,206	12,765	35.26%
El Paso	484,577	170,036	35.09%
Elbert	21,731	8,588	39.52%
Fremont	31,555	13,292	42.12%
Garfield	38,877	15,060	38.74%
Gilpin	5,379	1,992	37.03%
Grand	12,528	4,719	37.67%
Gunnison	13,709	5,363	39.12%
Hinsdale	764	372	48.69%
Huerfano	5,447	2,738	50.27%
Jackson	1,251	539	43.09%
Jefferson	442,295	193,185	43.68%
Kiowa	1,060	398	37.55%
Kit Carson	4,953	2,218	44.78%
La Plata	46,063	16,631	36.10%
Lake	5,575	1,721	30.87%
Larimer	268,410	109,691	40.87%
Las Animas	11,055	4,068	36.80%
Lincoln	3,297	1,358	41.19%
Logan	12,730	5,470	42.97%
Mesa	113,117	46,769	41.35%
Mineral	881	459	52.10%
Moffat	9,406	3,712	39.46%
Montezuma	19,986	8,814	44.10%
Montrose	29,612	13,276	44.83%
Morgan	17,484	6,294	36.00%
Otero	12,624	4,742	37.56%
Ouray	4,642	2,611	56.25%
Park	15,471	6,412	41.45%
Phillips	3,302	1,291	39.10%
Pitkin	14,526	5,472	37.67%
Prowers	7,393	2,448	33.11%
Pueblo	114,163	43,243	37.88%
Rio Blanco	4,593	2,321	50.53%
Rio Grande	8,143	3,652	44.85%
Routt	20,382	8,093	39.71%
Saguache	4,492	1,906	42.43%
San Juan	749	238	31.78%
San Miguel	6,400	2,445	38.20%
Sedgwick	1,837	748	40.72%
Summit	24,658	8,212	33.30%
Teller	20,723	8,527	41.15%
Washington	3,474	2,049	58.98%
Weld	204,782	72,214	35.26%
Yuma	6,022	2,751	45.68%
Total	4,007,495	1,601,524	39.96%