Warren voted for Sanders, but would not be opposed to voting for Clinton is she gains the Democratic nomination.
"Bernie can revolutionize this country, but bottom line I'm voting Democrat whoever wins," Warren said.
Clinton also cleaned up in Arizona in the 2008 preferential election, winning 13 of Arizona's 15 counties against then-U.S. Sen. Barack Obama.
Before Tuesday's contests she had 1,670 delegates to Sanders' 886, just over 750 delegates away from the 2,383 needed to receive the Democratic nomination.
Members of Arizona's largest political force, the state's 1.2 million independents, did not have a say in Tuesday's election.
Independents in Arizona make up about 37 percent of registered voters and boast higher numbers than either the state's registered Democrats (917,000) or registered Republicans (1.1 million).
The highly diverse group is defined by the Arizona Secretary of State's office simply as "Other", and is not a party but rather a group of voters who have not indicated a partisan preference.
Those voters registered as independent in Arizona are not allowed to choose a presidential candidate ahead of the general election. Independent voters are allowed to vote in Arizona's Aug. 30 primary election, but they must do so by choosing a partisan ballot.
"I'm disappointed that anybody that is outside of the parties doesn't get a voice," said Marshall Blanchard, a 32-year-old independent who lives in Tucson and supports Donald Trump for president.
He said he's been an independent since he started voting because he "didn't really feel that either one of the parties specifically represented my values."
"Socially I'm very liberal, but fiscally I'm a little bit more conservative and pragmatic," he said. "I would be considered a classical liberal, like Thomas Jefferson-era liberal, you know, social equality and stuff ... but fiscally I'm definitely considered a conservative because I'm not into theses excessive budgets that we have and these omnibus bills that get crammed through."
Latinos, the fastest growing population in the state and one that could have a major say in which candidate wins Arizona in the general election, are increasingly moving to the independent side, according to a poll released in January by Open Primaries Arizona, a group that has called for a change to the rule that excludes independents from the preferential election.
Open Primaries surveyed 1,500 Arizona Latino registered voters in both English and Spanish.
"In Arizona, 41 percent of Latinos are independent, a trend that is accelerating, and 63 percent of Arizona Latinos and 77 percent of millennials believe Latinos should register as independents so that the community is not tied to one party or the other," according to the survey.
"That means that close to 41 percent of Latino voters in our state cannot participate. That must change," said Open Primaries Arizona Director of Latino Outreach Armida Lopez at a recent speech in Phoenix. "We need all of our citizens to have equal access to voting. My community wants a fair opportunity to participate in shaping who our next president will be without being coerced into joining a political party."
The issue is acute for many independents because "in many cases, the primary is where the most important voting occurs," said Jeremy Gruber, senior vice president for Open Primaries.
"At a time when our democracy is in turmoil, we need everybody, every voter to stand up and participate and have voice," Gruber told Courthouse News on Tuesday. "Right now we are excluding a huge cross-section of Arizona voters from having a say at the most important political moment in a generation."
Arizona State University's Morrison Institute for Public Policy attempted to pin down the independent voter in a November 2015 report, "Who is Arizona's Independent Voter."
The report found that most independents in the Grand Canyon State define themselves as "moderate," but then so do most Republicans and Democrats.
"At first glance they seem to run the gamut on the political ideology scale, but really they mostly fall into three distinct and identifiable categories: conservative, liberal and moderate," the report states. "Make that heavy on the moderate (73.3 percent). Sliced thinner but more broadly, data suggest independent voters overall lean more liberally on social issues than the overall electorate but more conservatively on fiscal matters - although much depends on the particular issue." (Parentheses in the original)
This description seems to fit Blanchard, the young Tucson independent, quite well.
"When people buy into that left-right paradigm, a lot of the time they get a real extremist view, and they become polarized in one direction or the other, and they may oppose a completely logical viewpoint simply because it's given by somebody who is on the left or the right, or somebody who is my political enemy, so to speak," Blanchard said.
Blanchard said he supports Donald Trump because "he is talking about a lot of subjects that some of the other candidates refuse to even touch. Like NAFTA and the TPP [Trans-Pacific Partnership]." (brackets Added)
"I think that he could get people in there who would have enough integrity and wouldn't be affected by the old politics and might be able to better our country," Blanchard said.
The challenge for the eventual nominees seeking the votes of Arizona's independents will be to "capture moderate independents, those in the middle who see themselves as separated from both political party philosophies and whose vote cannot be easily predicted or won," the ASU report states.
Independents, for all their numbers, have not had a significant role in Arizona's state-level elections because of the typically low turnout for state primary elections. However, the ASU report found that 76 percent of those independents polled reported voting in the 2014 general election. While self-reported voting tends to skew high because of a perceived social pressure to vote, such numbers suggest that Arizona's independents could be a force to be reckoned with in November.
Courthouse News reporters Jamie Ross in Phoenix, Ariz., Tim Hull in Tucson, Ariz, Jonny Bonner in Salt Lake City, Utah, and Philip A. Janquart in Boise, Idaho, contributed to this report.
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