
Susan Page @SusanPage
And in 2016 President Obama didn't endorse his sitting vice president in the party primaries; if anything he discouraged him. So you might say President Trump is embracing the political norm here. — PolitiTweet.org
Gregory Korte @gregorykorte
Reagan didn't endorse Bush 41 until Bush had already locked up the nomination. Al Gore didn't even want Clinton's e… https://t.co/U0ZiUnWGOa