Answer: runningmate

AnswerCrossword Clue
RUNNINGMATEVice-presidential hopeful, say
RUNNINGMATEBiden, to Obama
RUNNINGMATEPolitical convention announcement
RUNNINGMATEVice presidential hopeful
RUNNINGMATECandidate's partner
RUNNINGMATEMarathoner's spouse?
RUNNINGMATEQuestion mark of 1960.
RUNNINGMATECandidate.
RUNNINGMATECo-nominee
RUNNINGMATEAspiring veep
RUNNINGMATEPerson on a political ticket
RUNNINGMATERyan, to Romney