In the race to the White House, running mates can play a big factor in who makes it to the top, and Curry recommends different strategies for Trump and Democratic nominee Hillary Clinton.
"In light of the terrible attack in Nice, France, I have postponed tomorrow's news conference concerning my Vice Presidential announcement", Trump tweeted late Thursday after a truck plowed into a crowd celebrating Bastille Day, leaving dozens dead. But by early evening, Gingrich told the AP he had heard nothing from Trump or others in the campaign.
Mike Pence delivers a speech during a campaign rally for Donald Trump in Westfield, Ind., on Tuesday.
Jason Miller, Trump's senior communications adviser, added: "A decision has not been made by Mr. Trump".
A low-key man largely defined in public life by his Christian faith, Pence, 57, is seen as a cautious choice of running mate - a political partner who is unlikely to embarrass Trump, and who may help him shore up support among conservative voters still wary of his candidacy.
Donald Trump is choosing Mike Pence as his running mate, NBC News has learned.
The Indianapolis Star reported that Trump is planning to pick Pence and that the Indiana governor is prepared to forgo his plans to run for a second term. He also met with Trump for about 2 1/2 hours on Wednesday in Indianapolis in a final audition.
Welcome to NY, and perhaps the vice presidency, Mike Pence. Yet his popularity at home has tumbled and re-election was not guaranteed.
Pence, a veteran politician with years of legislative experience, could offset some of Trump's electoral weaknesses. It also turned off some moderate Republicans, helping derail Pence's own presidential ambitions. "But I haven't made a final, final decision".
But Manafort dismissed suggestions in an interview on Fox News Channel that Trump was having second thoughts about his choice.
Pence said the criticism was based on a "great misunderstanding", but he ultimately worked with lawmakers - earning some criticism from the right - to pull back on some of the law's more divisive components.
In picking Pence, Trump passed on the more nationally known names of New Jersey Governor Chris Christie and former House Speaker Newt Gingrich.
Trump was up against a clock in unveiling his pick.
Trump is preparing for next week's Republican National Convention in Cleveland, where he will be formally nominated as the party's presidential candidate for the November 8 election. The 73-year-old would be the oldest candidate ever to become vice president.