Sen. Kyrsten Sinema, the Arizona Democrat-turned-independent, hasn't publicly announced whether she's running for re-election next year. But privately, her political team has been mapping out a campaign strategy, pitching donors and potential supporters on how she can win the marquee Senate race.

In a two-page prospectus obtained by NBC News, Sinema charts out a path to victory as an independent candidate in Arizona, with a glimpse of her possible campaign message and new details about the unique cross-party coalition she would seek to build in the competitive state.

Under the banner “Kyrsten’s Path to Victory,” the document says Sinema can win by attracting 10% to 20% of Democrats, 60% to 70% of independents and 25% to 35% of Republicans.