Complex sentence: Though Kohl's election was done according to the Basic Law, some voices criticized the move as the FDP had fought its 1980 campaign on the side of the SPD and even placed Chancellor Schmidt on some of their campaign posters.
Split into simpler sentences: Though Kohl's election was done according to the Basic Law, it came amid some controversy. The FDP had fought its 1980 campaign on the side of the SPD and even placed Chancellor Schmidt on some of their campaign posters.