Let me provide more detail for year one – 59 B.C.
When the newly elected Caesar introduced the land bill to the Senate, they filibustered until he withdrew the measure and took it to the assembly. It was vetoed by three tribunes but Pompey and Crassus spoke in favor, making it plain they were allied with Caesar. When Bibulus, the other Consul, tried to block the bill, Caesar had Pompey’s troops burst into the assembly and intimidate the opposition into surrender.