OPINION
¶ 1 The Maricopa County Justice Court, Scottsdale Precinct, denied the motion of Janis Villalpando for appointment of a special prosecutor for charges filed against her after her arrest for driving under the influence of alcohol (“DUI”). Villalpando then filed a special action in the Maricopa County Superior Court to challenge that ruling. The superior court accepted jurisdiction, but it denied Villalpando the relief she requested, and Villalpando appealed its decision to this court. We have jurisdiction pursuant to Arizona Revised Statutes §§ 12-120.21(A)(1) *307 (2003) and 12-2101(B) (2003). For the reasons that follow, we affirm the judgment of the superior court.
FACTS AND RELEVANT PROCEEDINGS
¶2 Villalpando, who was at the time an attorney in the Scottsdale City Attorney’s Office, was arrested in Scottsdale for DUI. Because of her employment, the Scottsdale City Court transferred Villalpando’s case to the Maricopa County Justice Court, Scottsdale Precinct, a transfer not at issue. The Scottsdale City Prosecutor (“Scottsdale Prosecutor”) made a limited appearance in the justice court to inform the court that, because Villalpando was a city employee, he would later “notify this Court of substitute counsel.”
¶ 3 The Scottsdale Prosecutor indeed subsequently moved to withdraw as counsel due to his conflict of interest. In the motion, he advised the justice court that the Mesa City Prosecutor (“Mesa Prosecutor”) was willing to assume responsibility for the case. Villal-pando did not respond and therefore apparently did not oppose the motion. Accordingly, the justice of the peace signed an order of substitution.
¶ 4 Several months after the order of substitution was filed, however, Villalpando filed a motion in the justice court for appointment of a special prosecutor. She argued that, once the Scottsdale Prosecutor had called his conflict to the court’s attention, his involvement in the case should have ceased. By taking the additional step of recommending a successor, she contended, the Scottsdale Prosecutor had perpetuated his conflict in violation of Villalpando’s due-process rights under both the Arizona and United States Constitutions. 1
¶ 5 The justice court denied Villalpando’s motion. Villalpando then filed a special action in the superior court. The court accepted jurisdiction, but it found “no appearance of impropriety, no actual conflict, and no error in the action of the Scottsdale City Prosecutor’s Office in referring the instant case to the Mesa City Prosecutor’s Office for prosecution____” Accordingly, it denied relief, and Villalpando appealed its judgment. 2
DISCUSSION
¶ 6 We review the judgment for an abuse of the superior court’s discretion, which occurs if the court erred in its application of the law or when the record does not substantially support its decision.
Merlina v. Jejna,
¶7 Villalpando does not contend that the Mesa Prosecutor has an independent conflict of interest that would disqualify him or his office, and she does not dispute the Mesa Prosecutor’s declaration that he has never been under the “supervision, guidance, or control” of the Scottsdale Prosecutor. Villalpando’s contention is that, once the Scottsdale Prosecutor had identified his conflict of interest, he was disqualified from making any further decisions related to her case without “perpetuating” that conflict. Thus, the sole issue is whether a conflict-barred prosecutor’s nomination of substitute counsel violates a defendant’s federal and state due-process rights to “fundamental fairness.” 3
*308
¶ 8 Without question, certain prosecutorial conflicts may implicate due-process concerns,
see, e.g., State v. Counterman, 8
Ariz.App. 526, 529-30,
Because there is no bright-line rule for determining whether a conflict rises to the level of a due-process violation, each case must be analyzed on the facts peculiar to it. As the Supreme Court has explained:
[D]ue process “is not a technical conception with a fixed content unrelated to time, place and circumstances.” Rather, the phrase expresses the requirement of “fundamental fairness,” a requirement whose meaning can be as opaque as its importance is lofty. Applying the Due Process Clause is therefore an uncertain enterprise [that] must discover what “fundamental fairness” consists of in a particular situation by first considering any relevant precedents and then by assessing the several interests that are at stake.
Lassiter v. Dept. of Soc. Servs.,
¶ 9 Because Villalpando did not object to the substitution of the Mesa Prosecutor when the motion for substitution was made, the justice court’s approval of that substitution was in effect the appointment of a “special prosecutor.”
See State v. Latigue,
¶ 10 The parties to a criminal action are the defendant and the State.
State v. Lam-berton,
¶ 11 Even so, a prosecutor’s duty to avoid a conflict of interest is prime because his paramount duty is to the principle of “fairness.” In other words, his interest is not so much to prevail as to ensure that “justice shall be done.”
Pool v. Superior Court (State),
Public confidence in the criminal justice system is maintained by assuring that it operates in a fair and impartial manner. This confidence is eroded when a prosecutor has a conflict or personal interest in the criminal case which he is handling.
Turbin,
¶ 12 Any interest that is inconsistent with the prosecutor’s duty to safeguard justice is a conflict that potentially could violate a defendant’s right to fundamental fairness. For example, if a prosecutor has a financial stake in the outcome of a prosecution, the conflict between that interest and the duties of the public office clearly presents constitutional concerns.
See, e.g., Ganger v. Peyton,
¶ 13 The record does not permit an evaluation of Villalpando’s motives in seeking the disqualification of the Mesa Prosecutor. The only harm that she has postulated from the substitution of prosecutors is the following from her opening brief:
Lower court prosecutors (the city prosecutors, not their assistant prosecutors) are aware of each other’s prosecutorial philosophies and practices. There are vast differences between the policies of the many valley city prosecutors. Scottsdale may very well have chosen the Mesa prosecutor’s office because there is an understanding between the two head prosecutors on how conflict cases, or drunk driving cases, should be handled. So, a prosecutor forced to withdraw from a case may still exert a strong influence over its outcome by assigning it to a particular city prosecutor’s office.
¶ 14 There are several difficulties with Vil-lalpando’s argument, not the least of which is the lack of any factual support. Indeed, her suggestion that the Scottsdale Prosecutor recommended the Mesa Prosecutor to the justice court for some nefarious purpose is entirely speculative. Additionally, she fails to identify any conflict on the part of either the Scottsdale Prosecutor or the Mesa Prosecutor, arguing only that the former’s nomina *310 tion of the latter as his successor gives rise to a constitutionally infirm “appearance of impropriety.”
¶ 15 The concern with an attorney’s appearance of impropriety stems from the American Bar Association’s former Model Code of Professional Responsibility Canon 9 and continues as part of an analysis of counsel’s conflict of interest.
State ex rel. Romley v. Superior Court (Flores),
¶ 16 Nonetheless, the mere “appearance of impropriety” rarely is sufficient to constitute a constitutional violation. In
Counterman,
for example, the defendant challenged a city’s prosecution of him on charges related to domestic violence because one of the assistant city attorneys, uninvolved in that criminal prosecution, had represented the defendant’s former wife in their divorce proceedings.
¶ 17
Counterman
demonstrates that a defendant’s right to fundamental fairness is not violated whenever the slightest “appearance of impropriety” can be insinuated. Certainly, the mere suggestion of impropriety is “too slender a reed” to warrant the disqualification of an entire prosecutorial office.
Flores,
¶ 18 In this ease, the Scottsdale Prosecutor sought to avoid any appearance of impropriety by asking an independent prosecutorial office to pursue the charges against Villal-pando, thereby mitigating claims that Villal-pando, as an employee of the City of Scottsdale, would receive preferential treatment.
See, e.g., Kennedy v. L.D.,
¶ 19 Villalpando’s claim that the Mesa Prosecutor might violate her rights to “fundamental fairness” is based solely on speculation. Without any evidence, and Villalpando concedes that she has none, we will “assume that [a] prosecutor [is] acting in good faith.”
State v. Boozer,
¶ 20 We further conclude that to establish by this court’s fíat a system of judicial oversight, such as the one suggested by Villalpando,
7
would constitute an inappropriate interference by the judicial branch with the broad discretion entrusted to the executive branch. A prosecutor “is properly vested with both the power to charge ... and the discretion to proceed to trial once a criminal action has been filed.”
State v. Ramsey,
¶21 It appears that the method for arranging for a new prosecutor when a conflict arises is established by the respective city prosecutor’s offices, who make informal, reciprocal agreements with other city prosecutor’s offices for assistance, subject to judicial approval of the substitution. As long as the prosecuting agency selected is not independently subject to disqualification and the disqualified prosecutor or prosecutor’s office refrains from further participation, we see no reason to interfere with this exercise of discretion. In other words, the recommendation to the court of who shall pursue a prosecution is left to the prosecutor’s broad discretion, a discretion with which a court should not interfere absent extraordinary circumstances.
¶22 Villalpando has failed to meet the burden of establishing that the Scottsdale Prosecutor acted illegally or exceeded his powers by arranging for a substitute prose-cutorial agency. His recommendation was subject both to approval by the court and to attack by Villalpando for any of the bases upon which a prosecutor may be disqualified for a cause personal to that prosecutor or his agency. 8
*312
¶ 23 Although not factually similar, we regard
Rupp,
The question of disqualifying Till called for a balancing of the effects of the previous objectionable conduct and the possibility of further similar involvement against the delay involved in finding and bringing another special prosecutor into the case. We believe that under all of the circumstances presented there was a reasonable basis for the trial court’s refusal to order a second change of prosecutor. We accordingly find no error and no prejudice to the appellants by the court’s action.
Id.
at 495-96,
¶ 24 The opinion in Rupp stands for the proposition that not every contact between a conflicted prosecutor’s office and a special prosecutor warrants disqualification of the special prosecutor. The facts of this case are more benign from Villalpando’s perspective than those of Rupp because, apart from a request to act as special prosecutor, there is no evidence of any contact between the Scottsdale Prosecutor and the Mesa Prosecutor relating to Villalpando’s case.
¶25 APAAC maintains that Villalpando’s argument is similar to that rejected in
State v. Eastlack,
¶26 Villalpando attempts to distinguish
Eastlack
because the case involved a change of judge and not a change of prosecutor. The distinction is one that weakens Villalpando’s argument, however. As the United States Supreme Court has made clear, “prosecutors may not necessarily be held to as stringent a standard of disinterest as judges” because, in our adversarial system, “[prosecutors] are necessarily permitted to be zealous in their enforcement of the law.”
Young v. United States ex rel Vuitton et Fils S.A.,
¶ 27 Villalpando argues next that Arizona should adopt a formal method for the substitution of conflicted prosecutors to bring Arizona in line with the majority of other jurisdictions. She claims that twenty-six states have statutory systems for conflict substitutions. Although she asserts that only New Mexico allows a prosecutor with a conflict to choose a successor, she does not account for the remaining states. Furthermore, the existence of statutory systems elsewhere does not establish that informal systems are improper, and none of the case law from other jurisdictions cited by Villalpando supports such a conclusion.
¶ 28 The case of
Commonwealth v. Breigh-ner,
¶ 29 The case of
Kahree v. Western Electric Co.,
¶30 The court in
Hartgraves v. State,
¶ 31 Villalpando cites the following passage from Hartgraves: “We desire to say in addition that the county attorney, being disqualified in this case, was without power or authority to appoint any one to represent him.” Id. Applying that quotation to this case is misleading because the holding is based on an older Oklahoman statute that has since been amended. The former statute required the trial court to appoint a replacement for a county attorney. See id. (citing Snyder’s Comp. Laws of Okla.1909, § 1598). However, the statute now vests such power in either an assistant county attorney or the Oklahoma Attorney General. See 19 Okla. Stat. Ann. § 215.9 (2000). Thus, the Hart-graves opinion does not aid our analysis of this matter. 11
*314
¶ 32 In
Williams v. Ellis,
¶ 33 Like the Indiana court, we fully expect and require our trial courts to review the nomination of a substitute prosecutorial agency,
see, e.g., Latigue,
CONCLUSION
¶34 The judgment of the superior court upholding the decision of the justice court is affirmed.
Notes
. "The Due Process Clause of the Arizona Constitution is construed similarly to the same clause in the United States Constitution.”
State v. Kaiser,
. The Phoenix City Prosecutor and the Arizona Prosecuting Attorneys Advisory Council ("AP-AAC”) are amici curiae. Both appear in support of the Mesa City Prosecutor’s Office.
. A defendant has a right to "fundamental fairness” as a matter of both substantive and procedural due process.
See, e.g., United States
v.
Lilly,
.
Villalpando calls attention to a court’s authority to appoint a particular attorney to represent a criminal defendant.
State v. Torres,
. The Arizona Supreme Court developed factors to consider when a court is faced with a motion to disqualify opposing counsel: (1) whether the motion is being made for the purposes of harassment; (2) whether the moving party will be damaged if the motion is denied; (3) whether there is an alternative solution or whether the proposed solution is the least damaging possible under the circumstances and (4) whether the possibility of public suspicion will outweigh any benefits that might accrue due to continued representation.
Alexander,
. Villalpando posits two scenarios that she insists illustrate how the Scottsdale Prosecutor’s nomination of the Mesa Prosecutor as his successor would culminate in a violation of her due-process rights. In the first of these hypothetical examples, the Mesa Prosecutor would give Villal-pando a "lenient” plea, thus prompting suspicion that the Mesa Prosecutor was selected to make the Scottsdale Prosecutor’s friend’s "problems” "disappear.” In the second hypothetical example, the Scottsdale Prosecutor selects the Mesa Prosecutor because he either knows of or actually requests strenuous prosecution by the Mesa Prosecutor with no leniency and no reduced charge by plea agreement for Villalpando. The motive supposedly would be to have Villalpando removed from her position as a City of Scottsdale civil attorney, thereby creating a vacancy for the Scottsdale Prosecutor who wishes to change positions.
To accept either of these scenarios without a shred of evidentiary support would require us to assume a deliberate breach of the duties and obligations of each of these prosecutors toward the justice system, a conclusion we are unwilling to draw.
See State v. Noriega,
. Villalpando maintains that the Scottsdale Prosecutor should have submitted to the justice court a list of four different prosecuting agencies willing to take the case from which list the court would have chosen, perhaps by random selection.
. Villalpando argues that the justice court’s decision agreeing to the substitution of prosecutors was meaningless because it was done “without constitutional analysis.” We disagree. First, Villalpando did not at the time oppose the substitution of the Mesa Prosecutor for the Scottsdale Prosecutor. Second, the substitution was pre *312 sumptively legitimate unless or until the court was presented with a valid reason for not accepting the recommendation. Third, she now has been able to assert her constitutional arguments.
. The opinion in
Eastlack
was based upon the court's earlier decision in
State v. Watkins,
. We do not mean to ignore the principle that a prosecutor owes certain duties of fairness to the judicial system similar to those of a judge.
See State v. Polan,
. Villalpando notes that this court has cited
Hartgraves
with approval.
See Corbin v. Broadman, 6
Ariz.App. 436,
