CBS News poll: Trump tops GOP field in Pennsylvania, Indiana
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Republican presidential front-runner Donald TrumpDonald John TrumpArizona GOP Senate candidate defends bus tour with far-right activist Alyssa Milano protests Kavanaugh in 'Handmaid's Tale' costume Bomb in deadly Yemen school bus attack was manufactured by US firm: report MORE has a 23-point lead over his closest challenger in Pennsylvania, according to a new poll.

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The billionaire businessman has 49 percent support from likely Republican voters in the CBS News Battleground Tracker poll released early Sunday, compared to 26 percent for Ted CruzRafael (Ted) Edward CruzCruz calls out O'Rourke for supporting NFL players' protests during anthem Beto O’Rourke: Term limits can help keep politicians from turning into a--holes Election Countdown: GOP worries House majority endangered by top of ticket | Dems make history in Tuesday's primaries | Parties fight for Puerto Rican vote in Florida | GOP lawmakers plan 'Freedom Tour' MORE and 22 percent for John Kasich.

The margin of error in the online poll is 4.6 percentage points. 

Trump has a 5-point lead in Indiana, according to that poll, with 40 percent support. Cruz follows with 35 percent and Kasich with 20 percent.

The margin of error in the Hoosier State is 6.6 percentage points.

According to the RealClearPolitics average of polls, Trump leads the GOP field by 19 points in Pennsylvania and 7 points in Indiana.

Trump also holds a double-digit lead in Pennsylvania in a Wall Street Journal/Marist/NBC News poll released early Sunday.