Spanish polls update

Several new polls in the last few days, as reported in Electometro. The overall picture since January 2011:

And a closer look at the smaller parties:

Looking at the more recent polls, especially by those pollsters who publish results more often, vote intentions for PP and PSOE seem very, very stable. The table below compares the results of the last to the next to last polls published by NC Report, Sigma Dos, and Metroscopia. Almost a little bit too stable, if we're talking about (as we think we are) independent samples.