A healthy degree of party unity among Democrats and Republicans has deteriorated into bitter partisan warfare.
I am not pollyannaish about the deep partisan battles that divide us.
At its worst, Washington is a place where name-calling partisan politics too often trumps policy.
The Labour Party has become consumed by collective bile towards... the Liberal Democrats. That portrays a rather nasty arrogance.
I have never seen such extreme partisanship, such bitter partisanship, and such forgetfulness of the fate of our fathers and of the Constitution.
It's one of the few regrets of my presidency - that the rancor and suspicion between the parties has gotten worse instead of better. There's no doubt a president with the gifts of Lincoln or Roosevelt might have better bridged the divide, and I guarantee I'll keep trying to be better so long as I hold this office.
I think partisanship is probably the greatest problem in Washington, D.C.
The tone is toxic here in Washington and we are exporting it around the country.
I think we've got to make a case that I'm ready, that I put my country first, and it's time to put aside partisan rancor and differences and work together for the country and that I can create jobs and restore our economy and keep our country safe.
Nasty is the new normal in Florida. Politics here is very gutterlike. It's like a very bad reality TV show that still gets very high ratings.
The Republican party has become as hostile towards its own base as the Liberals have always been.
