The EPP family is the strongest political family in polls in only seven countries, the socialist in nine (in 10 if one adds the Slovakian Hlas, which is not yet officially a PES member), the liberal/Renew family in four, the Eurosceptic-national conservative ECR and the far-left GUE/NGL party in one country each.
EPP, Socialists and Liberals are about equally strong in the European Council.
If the membership of the respective parliamentary groups in the EP were to remain constant, the following picture would emerge. The EPP would clearly lose seats compared to the last EP elections, but would still remain the largest force by a very narrow margin. The outcome would be 155 seats and within a range of 145-170 seats.
Read the whole anaylsis as pdf.