There's been a lot of speculation as to who will end up as the running mate for Donald Trump heading into the general election this November. Ever since becoming the presumptive Republican nominee after winning the Indiana primary two weeks ago, Trump has been narrowing down his list of potentialvice presidents.

Trump and Palin in November?

Earlier this week, the billionaire real estate mogul sat down with Fox News' Greta Van Susteren to discus the current state of the 2016 election, and gave insight into who his possible choice would be for vice president.

While Trump listed former Arizona Gov. Jan Brewer and current Oklahoma Gov. Mary Fallin to be on his short list, it appears another former female governor is also in consideration, as reported by The Hill on May 15.

Speaking with the Washington Post, Ben Carson, who previously had been tapped to put together a list of top running mates for Trump, revealed that former half-term Alaska Gov. Sarah Palin was at the top of the list. Just last week, Palin was asked about whether or not she would be interested in joining the ticket, but never gave a clear answer.

While Palin said she didn't want to be a "burden" on the ticket, she also acknowledged that she has been vetted more than anyone else and that there would be secrets in choosing her.

The former retired neurosurgeon also named New Jersey Gov. Chris Christie, Florida Sen. Marco Rubio, and Ohio Gov. John Kasich as possible selections in addition to Palin.

Carson has since stepped down from finding a vice president for Trump, with controversial campaign manager Corey Lewandowski taking over the position.

Election forecast

Though the former host of "The Apprentice" was able to pull out an upset and become the last man standing in the GOP primary, Trump is expected to have harder road ahead of him in November.

According to Real Clear Politics most recent rolling average, Trump trails Democratic front runner Hillary Clinton in general election polls, though the margin has started to shrink.