When European and national parties disagree
There is an interesting analysis at the Open Europe blog about how MEPs from a number of parties around Europe voted when their national leadership and the groups they are part of in the European parliament went in opposite directions.
It has already been noted that British Lib/Dem MEPs voted against the summit proposals to reduce EU budget limits. In the process they earned a severe public ticking-off from Nick Clegg when the Lib Dem leader praised Cameron's negotiating tactics and expressed disappointment that his MEPs voted with their European group against the proposed lower MFF budget ceiling and in favour of higher spending, a higher national contribution, and new taxes to fund the EU.
It is also interesting to note that UKIP's Kamikazi pilot vote against cutting the EU spending limits was not supported by the rest of the "Europe of Freedom and Democracy" group with which they sit.
The same sort of problem was visible in several parts of Europe: Angela Merkel was as keen as David Cameron to trim the EU budget but her MEPs failed to support her, as did those of the Dutch prime minister's party, while MEPs representing the Finnish government parties were split.
On the other hand, MEPs from the Swedish Moderaterna party and Polish Civic Platform party supported their respective Prime Ministers and backed the summit deal, in both cases defying the EPP group whip to do so.
You can read the Open Europe blog article here.