"Sending their support into the state, and some of them come into the state", he said.
Among that "onslaught", Winfrey blasted Republican ads she'd seen in her hotel room casting Abrams as too radical for the state, calling it "noise...created to confound you with fear".
"If she was a Republican and she was running against Trump in the primary, I'd have a tough decision to make", Watters quipped.
In an apparent reference to the controversy, Winfrey said, "Every single one of us - every single one of us - has the same power at the polls, and every single one of us has something that, if done in numbers too big to tamper with" - she paused for resounding, prolonged applause by the audience - "cannot be suppressed and can not be denied".
He did not have a negative comment for Winfrey.More news: President Trump blasts Paul Ryan over birthright citizenship comment
"This ain't Hollywood, this is Georgia - and Georgia wants a governor that's going to put Georgia values and Georgia first", Mr Pence said at a rally for Mr Kemp this week.
The race gained national attention early after Abrams, an African-American former state legislator, won the Democratic primary and with it the opportunity to become the first black female governor in the country. I'm not trying to test any waters.
"Stacey Abrams is being bankrolled by Hollywood liberals", Pence said, after drawing boos when he mentioned that "Oprah is in town" and noted that actor Will Ferrell was recently in the state for Democrats. "I'm kind of a big deal too and I've got a message, I've got a message for all of Stacey Abrams' liberal Hollywood friends".
More than 1.5 million Georgians already have cast ballots. "Canvassing for #StaceyAbramsforGovernor", Winfrey posted. "And to vote for myself", Winfrey said to cheers.
"I'm here today because Stacey Abrams cares about the things that matter". "Are you voting for her?"
"You are voting for her".