Republican presidential candidate Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE is ahead by 9 points in Indiana ahead of the state's Tuesday primary, according to a poll released Friday.

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Trump is the top choice among the solely self-reported Republicans surveyed, taking 42 percent compared to 34 percent for Cruz and 17 percent for Kasich.

The businessman is also the top choice among the self-reported independents and Democrats deemed likely to vote in the primary, leading Cruz by 10 points among that group.

While Trump holds a 13-point lead over Cruz among men, 45 to 32 percent, his lead among women is narrower — 36 to 32 percent.

Recent surveys have given Trump an advantage between 2 and 8 points over Cruz as the pair battle for support in the Hoosier State.

Popular Indiana Gov. Mike Pence is reportedly endorsing Cruz on Friday. The Texas senator announced Carly Fiorina this week as his running mate.

Cruz is seeking to gain some momentum in the state after drawing mockery for calling a basketball hoop a "ring."

Trump has also campaigned intensely in Indiana, appearing repeatedly with famed former Indiana University basketball coach Bobby Knight.

The survey of 400 likely GOP primary voters was conducted April 27–28 with a margin of error of 5 percentage points.