Just how bad was that election?

Just how bad was Tuesday's US election? Consider this from an email J Street sent to its supporters:

All 49 JStreetPAC-endorsed incumbents in the House –
elected.

All 7 JStreetPAC-endorsed Senate candidates – elected.

JStreetPAC's challengers and candidates for open
seats – elected in 13 out of 15 races
(Ami Bera hanging on to a razor