Colors are mapped to parties. po is on left (light blue), pis on right (dark blue). As is pretty clear, claimed affiliations don't match real behavior. Layout

Colors are mapped to parties. po is on left (light blue), pis on right (dark blue). As is pretty clear, claimed affiliations don't match real behavior. Layout = forceatlas2 and labeling is random due to a glitch (normally biggest node in a region.)