No. The Republicans made it about Obama by inviting Netanyahu to speak shortly before elections. Netanyahu then used that for his political campaign ad. Just as was predicted.
Ok, Obama allies getting out the anti- Netanyahu vote certainly didn't have anything to do with it.

I'd like to thank Obama for helping Netanyahu with this great victory
Do you think it's a good thing for foreign politician to use an audience with our representatives for political campaigning? I don't.
People have made unsubstantiated allegations that Obama intervened in Israeli elections but so far have no actual evidence.
However we DO have actual evidence that the Republicans did - whether deliberately or not, they allowed Netanyahu to use them for his own political purposes as is clearly demonstrated by his use of it in a campaign advertisement (despite his blatent lie that this was not a campaign stunt).
Personally - I don't think Obama had much to do with the election outcome as I seriously doubt voters were focused on that, but maybe polling evidence will show differently.
You really think that american candidates have not traveled to give the idea to voters they understand and willing to act on international politics? They are doing it for votes. They give speeches about what their policy will involve oversea. Why was being invited to speak on Iran, major supporter of terrorism, as a nuclear threat to the middle east and the world so different? Obama is touting his talks with Iran as nearing a close but hides the details that could effect everyone.
Netanyahu has been dealing with the Iranian threat for decades. His input and the life of his nation are vital in all of this
His administration has leaked details of the negotiations as they were going on. As far as I'm concerned - his input can go fly a kite. That is not the kind of ally we can trust. Netanyahu has been crying wolf and making false claims about Iran's nuclear capabilities for over a decade
doing everything possible to prevent a diplomatic solution.
Does he and Israel have a legitimate concern? Yes. But their concern ends, imo, when they try to sabotage negotiations in this manner and draw us into an armed conflict.
If he wanted to speak before Congress - he couldn't have done so AFTER the elections? Really now?
How many candidates have used an address before the government of a foreign country in their campaign?
Obama is my president - as Bush was. Not Netanyahu.