Repubs should get the Nixon Shock done before losing

 All of this is unfolding while the economy still looks strong, and before public impeachment proceedings have officially begun.

• House Republicans in swing districts are retiring at a very fast pace, especially in the suburbs of Texas and elsewhere. (Republicans talk grimly of the "Texodus.") Rep. Greg Walden — the top Republican on the House Energy and Commerce Committee, and the only Republican in Oregon's congressional delegation — yesterday shocked the party by becoming the 19th GOP House member to not seek re-election.
• The Republican Senate majority, once considered relatively safe, suddenly looks in serious jeopardy. Democrats are raising more money, and polling better, than Republican incumbents in battleground after battleground.
• President Trump trails every major Democratic candidate nationally and in swing states — and his favorable ratings remain well under 50%.

The biggest recent change is Republicans' increasingly precarious hold on the Senate.
National Journal's Josh Kraushaar writes in his "Against the Grain" column that "the pathway for a narrow Democratic takeover of the upper chamber is looking clearer than ever": "If Trump doesn’t win a second term, Democrats only need to net three seats to win back the majority."

If Trump doesn't do it, then the Dems have little to offer in a victory except a long period of deflation.