Donald Trump chose Indiana Gov. Mike Pence as his running mate this morning.

The GOP nominee made the official announcement on Twitter moments ago:

I am pleased to announce that I have chosen Governor Mike Pence as my Vice Presidential running mate. News conference tomorrow at 11:00 A.M. — Donald J. Trump (@realDonaldTrump) July 15, 2016

Trump was supposed to announce the pick from Trump Tower this morning at 11am, but he postponed it due to the Nice terror attack.

Sean Hannity will have a must-see interview with Gov. Pence, tonight at 10pm ET on Fox News Channel!

Breaking News: @realDonaldTrump chooses Indiana Governor Mike Pence as his vice presidential pick. pic.twitter.com/dZQGQAdQuS — Fox News (@FoxNews) July 15, 2016

Multiple reports on Thursday indicated that Pence had been selected by Trump, though the campaign denied it until now.

The announcement comes before Monday's start of the Republican National Convention in Cleveland.

Here's what people are saying on Twitter:

Trump kinda sorta had to do it now because at noon Pence had to pull out of governor's race and the jig would be up — HowardKurtz (@HowardKurtz) July 15, 2016

Trump's first event with Pence will be in Bedminster, NJ tomorrow. NEW JERSEY. Will the humiliation of Chris Christie never end? #Reek — Julie Roginsky (@julieroginsky) July 15, 2016

Pence — Meghan McCain (@MeghanMcCain) July 15, 2016

What @GovPenceIN does for @realDonaldTrump is give Congressional Republicans something to cheer about re his campaign. — David M. Drucker (@DavidMDrucker) July 15, 2016

It's "Pence! Good choice. He's comparatively young, calm, measured, reassuring--the yin to Trump's yang. — Larry Elder (@larryelder) July 15, 2016

Hillary camp was already locked and loaded on Mike Pence: "The most extreme pick in a generation" — HowardKurtz (@HowardKurtz) July 15, 2016

If you had any doubts about Trump sticking with his dangerous plan for America, say hello to his VP pick. pic.twitter.com/xuFClfZeLi — Hillary Clinton (@HillaryClinton) July 15, 2016

Trump just drove his one-car parade into a dumpster fire. — Ron Fournier (@ron_fournier) July 15, 2016

Off the top of my head, the only person who would be a worse VP than Pence is Newt. — Ann Coulter (@AnnCoulter) July 14, 2016

Withholding comment until it's official, but if claims about Pence as VP are correct, boy was I right about this being Trump's first mistake — Ann Coulter (@AnnCoulter) July 14, 2016

Stay tuned for full coverage of the big announcemnt on Fox News, including an interview with Mike Pence, tonight at 10 ET on "Hannity."

Manafort on #NeverTrump Movement's Demise: 'We Crushed Them'

DETAILS: Texas Father & Son Among Those Killed in Nice Terror Attack

Gen. Flynn: I Want Muslim Leaders to Stand Up Tonight and Condemn This Madness