As the Republican National Convention approaches next week, political media have been abuzz with rumors and speculation about who will be Donald Trump’s running mate. The bombastic billionaire, who is expected to make his decision Friday, has so far given only a few clues as to who he might be considering.

Here are the top three people who pundits think have a high vice presidential possibility.

Indiana Gov. Mike Pence

Pence reportedly met up with Trump Wednesday, fueling speculation that he had made it to the top of Trump’s VP short list. The governor has been in office since 2013 and has made a name for himself nationally with some controversial legislation and stances. That includes a religious freedom law that was criticized by those who felt it was carefully written so that businesses could discriminate against LGBT people.  He also tried to prevent Syrian refugees from being resettled in Indiana.

Former Speaker of the House Newt Gingrich

The potential for Gingrich to be picked as Trump’s running came roaring onto the scene when Fox News severed professional ties with him and after Gingrich introduced the presidential hopeful at a rally in Ohio this month.

Gingrich, who ran for president in 2012 but eventually lost to Mitt Romney in the nomination process, claims that he took action in the 1990s as speaker of the House that led to four consecutive years of balanced budgets. He has also railed against social welfare programs for what he sees as needless inefficiencies.

New Jersey Gov. Chris Christie

Christie is the only potential running mate being talked about who ran in the 2016 primary against Trump. He was also one of the first Republican politicians to endorse the billionaire, something that happened after the he dropped out of the nomination race after a disappointing showing in primaries.

A controversial Republican governor of a generally Democratic state who has cut state pensions while in office, Christie was also scarred by a national scandal after a lane of a bridge connecting New York and New Jersey was closed off, causing massive delays. At least one Christie aide have been implicated for the closure, which is said to have been politically motivated. However, the governor himself has not.