A majority of Republicans in critical battleground states approves of Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE's decision to choose Indiana Gov. Mike Pence Michael (Mike) Richard PenceMcConnell locks down key GOP votes in Supreme Court fight Momentum growing among Republicans for Supreme Court vote before Election Day Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election MORE as his running mate, according to a CBS News Battleground Tracker poll.

The poll found that 61 percent of GOP voters in these states approve of the decision.

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Republicans were more likely to call his choice a cautious pick rather than a bold one. GOP voters also said the addition of Pence to the ticket brings stability and will help Trump's chances in the general election.

Among all respondents in the poll, though, only 34 percent said they approved of the choice, 28 percent said they disapproved, and 38 percent said they were not sure.

The poll also found the race is close across several battleground states.

Trump, the presumptive GOP presidential nominee, is trailing Clinton in Ohio, 44 percent to 40 percent, among likely voters. The presumptive Democratic presidential nominee also leads in Michigan, 42 to 39 percent. Trump leads Clinton by 1 point in Iowa, 40 to 39 percent.

According to the poll, 83 percent of Trump voters said they would never consider Clinton, and 85 percent of Clinton's battleground-state voters said they would never consider Trump.

The poll was conducted from July 13 to 15 in 11 battleground states including Colorado, Florida, Iowa, Michigan, North Carolina, New Hampshire, Nevada, Ohio, Pennsylvania, Virginia and Wisconsin.

The Ohio poll was conducted among 1,104 likely voters, with a margin of error of 3.5 percentage points. The Michigan poll was conducted among 1,201 likely voters, with a margin of error of 4.1 percentage points. The Iowa poll was conducted among 998 likely voters, with a margin of error of 4.8 percentage points.