# 2020 Arizona Democratic presidential primary

"none" is preferred when the title is already sufficiently detailed; see [[WP:SDNONE]]
Elections in Arizona :
Federal government
Presidential elections
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Presidential primaries
Democratic
2004
2008
2016
2020
2024
Republican
2008
2012
2016
2024
U.S. Senate elections
1912
1914
1916
1920
1922
1926
1928
1932
1934
1938
1940
1944
1946
1950
1952
1956
1958
1962
1964
1968
1970
1974
1976
1980
1982
1986
1988
1992
1994
1998
2000
2004
2006
2010
2012
2016
2018
2020 sp
2022
2024
2028
2030
U.S. House of Representatives elections
1911
1912
1914
1916
1918
1920
1922
1924
1926
1928
1930
1932
1933
AL sp
1934
1936
1938
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1961
2nd sp
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1991
2nd sp
1992
1994
1996
1998
2000
2002
2004
2006
8th
2008
2010
2012
8th sp
2014
2016
2018
8th sp
2020
2022
2024
2026 :
State government
State elections
2006
2010
2014
2016
2018
2020
2022
2024
Gubernatorial elections
1911
1914
1916
1918
1920
1922
1924
1926
1928
1930
1932
1934
1936
1938
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1974
1978
1982
1986
1990
1994
1998
2002
2006
2010
2014
2018
2022
2026
Secretary of State elections
2014
2018
2022
2026
Attorney General elections
2014
2018
2022
2026
Treasurer elections
2022
Superintendent elections
2018
2022
Senate elections
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024
House of Representatives elections
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024 :
Ballot measures
List of Arizona ballot propositions
2000
203
2004
200
2006
107
204
207
2008
102
2010
100
203
2020
207
2024
139 :
Phoenix
Mayoral elections
2011
2015
2018–19 (sp)
2020
2024 :
Tucson
Mayoral elections
1991
1995
1999
2003
2007
2011
2015
2019
2023 :
Other localities
Gilbert
2012
Glendale
2012
2016
Maricopa County
2024
Mesa
2008
2012
2020
2024
Scottsdale
2008
2012 :
vte :
Pledged national convention delegates :
| Type | Del. |
| CD1 | 5 |
| CD2 | 6 |
| CD3 | 5 |
| CD4 | 3 |
| CD5 | 5 |
| CD6 | 5 |
| CD7 | 4 |
| CD8 | 5 |
| CD9 | 6 |
| PLEO | 9 |
| At-large | 14 |
| Total pledged delegates | 67 |
The 2020 Arizona Democratic presidential primary took place on March 17, 2020, the third primary Tuesday of the month, as one of three contests on the same day in the Democratic Party primaries for the 2020 presidential election, while the contest in Ohio had been postponed for roughly a month. The closed primary allocated 80 delegates towards the 2020 Democratic National Convention, of which 67 were pledged delegates allocated according to the results of the primary.
Three major candidates ran in the primary, including former vice president Joe Biden, senator Bernie Sanders from Vermont, and representative Tulsi Gabbard from Hawaii's 2nd district. 12 other candidates who withdrew prior to the contest were also on the ballot, along with three minor candidates. Biden won the primary, with almost 44% of the vote and 38 delegates, while Sanders came in second place with almost 33% of the vote and 29 delegates. In a distant third was former mayor Michael Bloomberg, who came close to 10%, even though he had suspended his campaign nearly two weeks before and had issued an official withdrawal with the state, still remaining on the ballot.
Biden won 13 of 15 counties, with the exception of Coconino and Yuma, and 7 of 9 congressional districts. Key to his victory were white voters, whom he won 51-32 per CNN exit polls, and suburban voters, who he won 53–32. In a stark contrast from 2016, Sanders' strength was reliant primarily on non-white and Hispanic voters, whom Biden won by only 47-45 and 45–44, respectively. Biden would ultimately win the state of Arizona in the general election by 10,457 votes, making him the first Democrat to win it since Bill Clinton in 1996 and only the second since Harry Truman did so in 1948.

## Procedure

Arizona was one of three states holding primaries on March 17, 2020, alongside Florida and Illinois, while only one day before Ohio had been the first state to postpone its primary due to the COVID-19 pandemic and cancel in-person voting, accepting ballots until April 28 instead.
Voters had to have registered as Democrats by February 18 to be eligible for voting in the primary. Arizona mailed ballots to voters on the permanent early voting list. Ballots had to be received by 7:00 p.m. on March 17, 2020. In addition, some Arizona counties offered early voting sites, where any voter could walk in and vote in person, Monday to Friday, from February 19 through March 13, 2020. Voting took place from 6:00 a.m. until 7:00 p.m MST. In the closed primary, candidates had to meet a threshold of 15 percent at the congressional district or statewide level in order to be considered viable for delegates. The 67 pledged delegates to the 2020 Democratic National Convention were allocated proportionally on the basis of the results of the primary. Of these, between 3 and 6 were allocated to each of the state's 9 congressional districts and another 9 were allocated to party leaders and elected officials (PLEO delegates), in addition to 14 at-large delegates. As a March primary on Stage I of the primary timetable Arizona received no bonus delegates, in order to disperse the primaries between more different date clusters and keep too many states from hoarding on a March date.
District caucuses were held on April 18, 2020, to designate national convention district delegates. The state convention and state committee meeting were subsequently held on May 16, 2020, to vote on the 14 at-large and 9 pledged PLEO delegates for the Democratic National Convention. The delegation also included 13 unpledged PLEO delegates: 7 members of the Democratic National Committee and 6 members of Congress (one senator and 5 representatives).

## Candidates

The following candidates appeared on the ballot in Arizona. Candidates that had filed a formal withdrawal with the office remained on the ballot because it had already been printed but their votes were not individually published in the final canvass, making them effectively ineligible.
Running
* Joe Biden
* Roque De La Fuente III
* Michael Ellinger
* Tulsi Gabbard
* Henry Hewes
* Bernie Sanders
Withdrawn
* Pete Buttigieg
* Julian Castro
* Deval Patrick
* Elizabeth Warren
* Marianne Williamson
* Andrew Yang
Formal withdrawal (ineligible)
* Michael Bennet
* Michael Bloomberg
* Cory Booker
* John Delaney
* Amy Klobuchar
* Tom Steyer

## Polling

Polling aggregation :
| Source of poll aggregation | Date updated | Dates polled | Joe Biden | Bernie Sanders | Tulsi Gabbard | Other/ Undecided |
| 270 to Win | Mar 17, 2020 | Mar 3–16, 2020 | 50.6% | 29.4% | 1.0% | 19.0% |
| RealClear Politics | Mar 17, 2020 | Mar 6–15, 2020 | 51.7% | 33.7% | 1.0% | 13.6% |
| FiveThirtyEight | Mar 17, 2020 | until Mar 16, 2020 | 51.6% | 26.9% | 1.1% | 20.4% |
| Average | Average | Average | 51.3% | 30.0% | 1.0% | 17.7% |
Tabulation of individual polls of the 2020 Arizona Democratic primary :
| Poll source | Date(s) administered | Sample size | Margin of error | Joe Biden | Michael Bloomberg | Pete Buttigieg | Kamala Harris | Bernie Sanders | Elizabeth Warren | Andrew Yang | Other | Undecided |
| Swayable | Mar 16, 2020 | 1,167 (LV) | ± 5.0% | 53% | – | – | – | 29% | – | – | 19% | – |
| Marist/NBC News | Mar 10–15, 2020 | 523 (LV) | ± 6.0% | 53% | – | – | – | 36% | – | – | 8% | 3% |
| Marist/NBC News | Mar 10–15, 2020 | 913 (RV) | ± 4.5% | 50% | – | – | – | 37% | – | – | 9% | 5% |
| Monmouth University | Mar 11–14, 2020 | 373 (LV) | ± 5.1% | 51% | 5% | 3% | – | 31% | 3% | – | 2% | 5% |
| Latino Decisions/Univision/ Arizona State University | Mar 6–11, 2020 | 541 (LV) | ± 4.2% | 57% | – | – | – | 38% | – | – | – | 5% |
| Latino Decisions/Univision/ Arizona State University | Mar 6–11, 2020 | 541 (LV) | ± 4.2% | 51% | – | – | – | 34% | – | – | 6% | 8% |
| | March 4–5, 2020 | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race | Bloomberg and Warren withdraw from the race |
| OH Predictive Insights | Mar 3–4, 2020 | 398 (LV) | ± 4.9% | 45% | 12% | – | – | 17% | 13% | – | 4% | 9% |
| | March 1–2, 2020 | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race | Buttigieg and Klobuchar withdraw from the race |
| | February 11, 2020 | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls | New Hampshire primary; Yang withdraws from the race after close of polls |
| | Dec 3, 2019 | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race | Harris withdraws from the race |
| OH Predictive Insights | Oct 31 – Nov 8, 2019 | 260 (LV) | ± 6.1% | 29% | – | 9% | 5% | 16% | 18% | 4% | 19% | – |
| Emerson Polling | Oct 25–28, 2019 | 339 | ± 5.2% | 28% | – | 12% | 4% | 21% | 21% | 5% | 7% | – |
| Siena Research/New York Times | Oct 13–26, 2019 | 209 | – | 24% | – | 5% | 3% | 16% | 15% | 1% | 1% | 31% |
| Change Research | Sep 27–28, 2019 | 396 (LV) | – | 15% | – | 13% | 4% | 19% | 35% | 8% | 7% | – |
| Bendixen&Amandi | Sep 9–12, 2019 | 250 | ± 4.3% | 29% | – | 5% | 4% | 18% | 24% | 2% | 8% | 10% |
| Zogby Analytics | May 23–29, 2019 | 197 | ± 7.0% | 35% | – | 6% | 4% | 16% | 10% | 0% | 11% | – |

## Results

2020 Arizona Democratic presidential primary :
| Candidate | Votes | % | Delegates |
| Joe Biden | 268,029 | 43.70 | 38 |
| Bernie Sanders | 200,456 | 32.70 | 29 |
| Elizabeth Warren (withdrawn) | 35,537 | 5.79 | |
| Pete Buttigieg (withdrawn) | 24,868 | 4.05 | |
| Tulsi Gabbard | 3,014 | 0.49 | |
| Andrew Yang (withdrawn) | 1,921 | 0.31 | |
| Julian Castro (withdrawn) | 754 | 0.12 | |
| Marianne Williamson (withdrawn) | 668 | 0.11 | |
| Deval Patrick (withdrawn) | 242 | 0.04 | |
| Henry Hewes | 208 | 0.03 | |
| Other candidates | 812 | 0.13 | |
| Other votes | 4,942 | 0.81 | |
| Ineligible candidates 0Michael Bloomberg 0Amy Klobuchar 0Tom Steyer 0John Delaney 0Cory Booker 0Michael Bennet | 71,904 58,797 10,333 1,381 505 494 394 | 11.72 9.59 1.68 0.23 0.08 0.08 0.06 | |
| Total | 613,355 | 100% | 67 |

### By county

| County | Joe Biden | Joe Biden | Bernie Sanders | Bernie Sanders | Elizabeth Warren (withdrawn†) | Elizabeth Warren (withdrawn†) | Pete Buttigieg (withdrawn†) | Pete Buttigieg (withdrawn†) | Tulsi Gabbard | Tulsi Gabbard | Andrew Yang (withdrawn) | Andrew Yang (withdrawn) | Julián Castro (withdrawn) | Julián Castro (withdrawn) | Marianne Williamson (withdrawn) | Marianne Williamson (withdrawn) | Rocky De La Fuente | Rocky De La Fuente | Deval Patrick (withdrawn) | Deval Patrick (withdrawn) | Henry Hewes | Henry Hewes | Michael A. Ellinger | Michael A. Ellinger | Others | Others | Margin | Margin | Total votes cast | Eligible voters | Voter turnout |
| County | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | Total votes cast | Eligible voters | Voter turnout |
| Apache | 3,092 | 44.0% | 2,523 | 35.9% | 252 | 3.6% | 143 | 2.0% | 48 | 0.7% | 36 | 0.5% | 20 | 0.3% | 25 | 0.4% | 26 | 0.4% | 22 | 0.3% | 13 | 0.2% | 10 | 0.1% | 818 | 11.6% | 569 | 8.1% | 7,028 | 28,734 | 24.5% |
| Cochise | 4,123 | 41.7% | 2,694 | 27.3% | 678 | 6.9% | 466 | 4.7% | 93 | 0.9% | 34 | 0.3% | 22 | 0.2% | 20 | 0.2% | 26 | 0.3% | 10 | 0.1% | 8 | 0.1% | 4 | 0.0% | 1,710 | 17.3% | 1,429 | 14.4% | 9,888 | 20,356 | 48.6% |
| Coconino | 6,578 | 37.4% | 7,650 | 43.5% | 1,255 | 7.1% | 527 | 3.0% | 94 | 0.5% | 64 | 0.4% | 16 | 0.1% | 23 | 0.1% | 17 | 0.1% | 13 | 0.1% | 9 | 0.1% | 5 | 0.0% | 1,354 | 7.7% | –1,072 | –6.1% | 17,605 | 35,901 | 49.0% |
| Gila | 2,041 | 47.8% | 928 | 21.7% | 192 | 4.5% | 181 | 4.2% | 37 | 0.9% | 25 | 0.6% | 10 | 0.2% | 24 | 0.6% | 8 | 0.2% | 3 | 0.0% | 11 | 0.3% | 2 | 0.1% | 807 | 18.9% | 1,113 | 26.1% | 4,269 | 8,845 | 48.3% |
| Graham | 774 | 46.2% | 420 | 25.0% | 70 | 4.2% | 44 | 2.6% | 17 | 1.0% | 14 | 0.8% | 8 | 0.5% | 5 | 0.3% | 10 | 0.6% | 0 | 0.0% | 2 | 0.1% | 0 | 0.0% | 313 | 18.7% | 354 | 21.1% | 1,677 | 5,082 | 33.0% |
| Greenlee | 316 | 45.0% | 138 | 19.6% | 25 | 3.6% | 30 | 4.3% | 14 | 2.0% | 6 | 0.9% | 4 | 0.6% | 1 | 0.1% | 4 | 0.6% | 0 | 0.0% | 3 | 0.4% | 1 | 0.1% | 161 | 22.9% | 178 | 25.3% | 703 | 1,756 | 40.0% |
| La Paz | 323 | 44.8% | 193 | 26.8% | 29 | 4.0% | 21 | 2.9% | 6 | 0.8% | 6 | 0.8% | 5 | 0.7% | 3 | 0.4% | 2 | 0.3% | 1 | 0.1% | 1 | 0.1% | 2 | 0.3% | 129 | 17.9% | 130 | 18.0% | 721 | 2,282 | 31.6% |
| Maricopa | 153,707 | 42.9% | 120,379 | 33.6% | 20,584 | 5.7% | 15,346 | 4.3% | 1,620 | 0.4% | 1,109 | 0.3% | 345 | 0.1% | 307 | 0.1% | 297 | 0.1% | 121 | 0.0% | 99 | 0.0% | 92 | 0.0% | 44,384 | 12.4% | 33,328 | 9.3% | 358,390 | 732,376 | 48.9% |
| Mohave | 4,450 | 47.4% | 2,142 | 22.8% | 432 | 4.6% | 493 | 5.3% | 64 | 0.7% | 38 | 0.4% | 7 | 0.1% | 18 | 0.2% | 16 | 0.2% | 7 | 0.1% | 7 | 0.1% | 5 | 0.4% | 1,701 | 18.1% | 2,308 | 24.6% | 9,380 | 20,872 | 44.9% |
| Navajo | 3,585 | 44.3% | 2,617 | 32.8% | 316 | 3.9% | 193 | 2.4% | 54 | 0.7% | 59 | 0.7% | 14 | 0.2% | 25 | 0.3% | 18 | 0.2% | 11 | 0.1% | 14 | 0.2% | 10 | 0.1% | 1,169 | 14.5% | 968 | 12.0% | 8,085 | 25,215 | 32.1% |
| Pima | 60,622 | 45.3% | 42,954 | 32.1% | 8,602 | 6.4% | 4,907 | 3.7% | 613 | 0.5% | 306 | 0.2% | 149 | 0.1% | 105 | 0.1% | 88 | 0.1% | 32 | 0.0% | 20 | 0.0% | 33 | 0.0% | 15,378 | 11.5% | 17,668 | 13.2% | 133,809 | 237,568 | 56.3% |
| Pinal | 12,450 | 48.4% | 6,658 | 25.9% | 1,165 | 4.5% | 1,030 | 4.0% | 148 | 0.6% | 106 | 0.4% | 39 | 0.2% | 33 | 0.1% | 45 | 0.2% | 6 | 0.0% | 12 | 0.1% | 3 | 0.0% | 4,032 | 15.7% | 5,792 | 22.5% | 25,727 | 60,034 | 42.9% |
| Santa Cruz | 1,876 | 40.6% | 1,547 | 33.5% | 194 | 4.2% | 131 | 2.8% | 15 | 0.3% | 18 | 0.4% | 22 | 0.5% | 12 | 0.3% | 25 | 0.5% | 2 | 0.0% | 0 | 0.0% | 6 | 0.1% | 775 | 16.8% | 329 | 7.1% | 4,623 | 13,552 | 34.1% |
| Yavapai | 10,317 | 47.9% | 5,717 | 26.5% | 1,355 | 6.3% | 1,015 | 4.7% | 129 | 0.6% | 56 | 0.3% | 5 | 0.0% | 42 | 0.2% | 5 | 0.0% | 3 | 0.0% | 5 | 0.0% | 3 | 0.0% | 2,891 | 13.4% | 4,600 | 21.4% | 21,543 | 31,856 | 67.6% |
| Yuma | 3,775 | 38.1% | 3,896 | 39.3% | 388 | 3.9% | 341 | 3.4% | 62 | 0.6% | 44 | 0.4% | 88 | 0.9% | 25 | 0.3% | 41 | 0.4% | 11 | 0.1% | 4 | 0.0% | 8 | 0.1% | 1,224 | 12.4% | –121 | –1.2% | 9,907 | 31,914 | 31.0% |
| Totals | 268,029 | 43.7% | 200,456 | 32.7% | 35,537 | 5.8% | 24,868 | 4.1% | 3,014 | 0.5% | 1,921 | 0.3% | 754 | 0.1% | 668 | 0.1% | 628 | 0.1% | 242 | 0.0% | 208 | 0.0% | 184 | 0.0% | 76,846 | 12.5% | 67,573 | 11.0% | 613,355 | 1,256,343 | 48.8% |

### By congressional district

| Congressional district | Joe Biden | Joe Biden | Bernie Sanders | Bernie Sanders | Elizabeth Warren (withdrawn†) | Elizabeth Warren (withdrawn†) | Pete Buttigieg (withdrawn†) | Pete Buttigieg (withdrawn†) | Tulsi Gabbard | Tulsi Gabbard | Andrew Yang (withdrawn) | Andrew Yang (withdrawn) | Julián Castro (withdrawn) | Julián Castro (withdrawn) | Marianne Williamson (withdrawn) | Marianne Williamson (withdrawn) | Rocky De La Fuente | Rocky De La Fuente | Deval Patrick (withdrawn) | Deval Patrick (withdrawn) | Henry Hewes | Henry Hewes | Michael A. Ellinger | Michael A. Ellinger | Others | Others | Margin | Margin | Total votes cast | Eligible voters | Voter turnout |
| Congressional district | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | # | % | Total votes cast | Eligible voters | Voter turnout |
| 1st | 32,749 | 45.8% | 22,336 | 31.2% | 3,776 | 5.3% | 2,472 | 3.5% | 432 | 0.6% | 302 | 0.4% | 107 | 0.2% | 119 | 0.2% | 117 | 0.2% | 53 | 0.1% | 55 | 0.1% | 33 | 0.1% | 8,954 | 12.5% | 10,413 | 14.6% | 71,505 | 167,908 | 42.6% |
| 2nd | 43,970 | 45.9% | 28,927 | 30.2% | 6,741 | 7.0% | 3,814 | 4.0% | 479 | 0.5% | 240 | 0.3% | 82 | 0.1% | 88 | 0.1% | 72 | 0.1% | 30 | 0.0% | 19 | 0.0% | 18 | 0.0% | 11,238 | 11.7% | 15,043 | 15.7% | 95,718 | 160,428 | 59.7% |
| 3rd | 23,744 | 38.7% | 24,766 | 40.4% | 2,724 | 4.4% | 1,595 | 2.6% | 292 | 0.5% | 180 | 0.3% | 222 | 0.4% | 72 | 0.1% | 115 | 0.2% | 34 | 0.1% | 17 | 0.0% | 31 | 0.1% | 7,505 | 12.2% | −1,022 | −1.7% | 61,297 | 158,635 | 38.6% |
| 4th | 22,338 | 47.4% | 11,925 | 25.3% | 2,550 | 5.4% | 2,298 | 4.9% | 293 | 0.6% | 164 | 0.4% | 42 | 0.1% | 100 | 0.2% | 61 | 0.1% | 20 | 0.0% | 31 | 0.1% | 15 | 0.0% | 7,291 | 15.5% | 10,413 | 22.1% | 47,128 | 90,296 | 52.2% |
| 5th | 27,851 | 44.3% | 19,636 | 31.3% | 3,721 | 5.9% | 3,020 | 4.8% | 302 | 0.5% | 210 | 0.3% | 36 | 0.1% | 58 | 0.1% | 35 | 0.1% | 8 | 0.0% | 13 | 0.0% | 13 | 0.0% | 7,920 | 12.6% | 8,215 | 13.1% | 62,823 | 121,006 | 51.9% |
| 6th | 34,295 | 47.4% | 19,878 | 27.5% | 4,240 | 5.9% | 3,570 | 4.9% | 347 | 0.5% | 156 | 0.2% | 33 | 0.1% | 57 | 0.1% | 34 | 0.1% | 20 | 0.0% | 15 | 0.0% | 10 | 0.0% | 9,676 | 13.4% | 14,417 | 19.9% | 72,331 | 129,893 | 55.7% |
| 7th | 19,789 | 35.6% | 24,701 | 44.4% | 2,676 | 4.8% | 1,572 | 2.8% | 182 | 0.3% | 191 | 0.3% | 124 | 0.2% | 42 | 0.1% | 77 | 0.1% | 27 | 0.1% | 11 | 0.0% | 23 | 0.0% | 6,202 | 11.2% | −4,912 | −8.8% | 55,617 | 148,509 | 37.5% |
| 8th | 30,594 | 46.8% | 17,537 | 26.8% | 3,420 | 5.2% | 3,098 | 4.7% | 334 | 0.5% | 206 | 0.3% | 59 | 0.1% | 74 | 0.1% | 59 | 0.1% | 22 | 0.0% | 28 | 0.0% | 21 | 0.0% | 9,985 | 15.3% | 13,057 | 20.0% | 65,437 | 123,996 | 52.8% |
| 9th | 32,699 | 40.1% | 30,750 | 37.7% | 5,689 | 7.0% | 3,429 | 4.2% | 353 | 0.4% | 272 | 0.3% | 49 | 0.1% | 58 | 0.1% | 58 | 0.1% | 28 | 0.0% | 19 | 0.0% | 20 | 0.0% | 8,075 | 9.9% | 1,949 | 2.4% | 81,499 | 155,672 | 52.4% |
| Totals | 268,029 | 43.7% | 200,456 | 32.7% | 35,537 | 5.8% | 24,868 | 4.1% | 3,014 | 0.5% | 1,921 | 0.3% | 754 | 0.1% | 668 | 0.1% | 628 | 0.1% | 242 | 0.0% | 208 | 0.0% | 184 | 0.0% | 76,846 | 12.5% | 67,573 | 11.0% | 613,355 | 1,256,343 | 48.8% |

## Analysis

Arizona was a hotly contested state throughout both the primary and general election seasons due to its rapidly diversifying electorate. A high concentration of Hispanic and Latino voters as well as an intense swing to the left in suburban areas and the Republican Party having moved to the right, strengthened Democratic support while drawing new divides in the Democratic Party. In 2016, Hillary Clinton defeated Bernie Sanders by a 14.9% margin; despite Sanders being trailing Biden significantly nationwide, he actually improved on his performance in Arizona in 2020, losing it by an 11.0% margin. This improvement was mostly attributable to improvements among Hispanic and Latino voters: Sanders performed well among that demographic throughout the primary as opposed to 2016, when Clinton handily carried regions with high densities of Hispanic voters. Per CNN exit polls, Biden won Hispanic voters 45-44 compared to white voters, who he won 51–32. Sanders won Yuma County, where 64.6% of the population are Hispanic or Latino, as well as Arizona's 3rd and 7th congressional districts; the former, home to Tucson, Yuma, and most of the southern border, is 65.1% Hispanic, while the latter, composing much of inner Phoenix, is 64.0% Hispanic. Nonetheless, Biden's performance represented a significant improvement among voters of these demographics from earlier in the primary, which was compounded by a strong performance in the state's suburbs. He won Maricopa County, which holds Phoenix and 61.6% of the population, by 33,328 votes, largely due to the Phoenix suburbs, which have been reliably Republican since the 1950s but have recently shifted to the left. He also won Pima County, the second largest county and home to Tucson, by 17,668 votes.
The results of the primary would be reflected in the general election: Biden would end up winning Arizona by 10,457 votes, the first Democrat to do so since Bill Clinton in 1996 and only the second since Harry S. Truman in 1948. He would also become the first to win crucial Maricopa County since Truman. His performance in predominantly-Hispanic areas in urban areas and along the southern border would also decline compared to 2016, though would be supplemented by a raw increase in voter turnout.