The memo, obtained by The New York Times, essentially lays down a marker for once the dust has settled after Election Day, and it becomes clear which Republicans fared well and which did not. In the White House’s view, according to the memo, those Republicans who are running at a distance from Mr. Trump may come to regret it when the votes are cast.

Candidates who are looking for a path to victory need to “boldly align” themselves with a president who is historically popular with Republican voters, Mr. Stepien wrote.

The travel schedule will take Mr. Trump to congressional districts in Nevada, Minnesota, Kansas, Iowa, Pennsylvania, Ohio and Kentucky, in addition to stops he will make for certain competitive statewide races.