This is an unusual election with very strong anti-establishment subcurrents, making predictions problematic. On the Republican side,Donald Trump has demonstrated amazing resilience that has baffled the pundits, and that looks likely to carry him through. Expect a Marco Rubio V.P. slot to try to reach out to Latino voters.

On the Democratic side, expect an upset, as the highly enthusiastic progressive base inspired by honesty and integrity will carry Bernie Sanders to a narrow victory over Hillary Rodham Clinton. Mr. Sanders is registering legions of new voters who are often underrepresented in polls, but will push Mr. Sanders over the edge in many close states. Expect Mr. Sanders to build bridges with Clinton supporters and Latinos by asking Julián Castro to be his V.P.

SHAWN OLSON

Alexandria, Minn.