Trump’s popularity may hinge on a Senate GOP Primary in Alabama, according to this article from Newsweek. President Trump has endorsed Luther Strange as the GOP candidate; however, Strange is running against a far-right, “Trumpist” named Roy Moore, who is far ahead in the polls.
Moore is backed by former White House Chief Strategist Steve Bannon, and represents many of the ideas that brought President Trump into the White House. A rejection of President Trump’s selected candidate in favor of one who reflects his ideals, would suggest that Trump’s unwaivering base may not be so loyal to him as they are to his stated philosophy. If that were the case, then Trump’s more centric actions and his collaboration with the Democrats (some background here) may make his impeachment more likely rather than less.