It is easy to conceive what might be expected of such a population.

As they had already granted to Caesar the means of more than doubling his original army, so after the outbreak of the civil war recruits presented themselves in great numbers for the ample levies that were immediately instituted.
Italy In Italy proper, on the other hand, the influence of Caesar was not even remotely to be compared to that of his opponents.

Although he had the skill by dexterous manoeuvres to put the Catonian party in the wrong, and had sufficiently commended the rectitude of his cause to all who wished for a pretext with a good conscience either to remain neutral, like the majority of the senate, or to embrace his side, like his soldiers and the Transpadanes, the mass of the burgesses naturally did not allow themselves to be misled by these things and, when the commandant of Gaul put his legions in motion against Rome, they beheld--despite all formal explanations as to law--in Cato and Pompeius the defenders of the legitimate republic, in Caesar the democratic usurper.

People in general moreover expected from the nephew of Marius, the son-in-law of Cinna, the ally of Catilina, a repetition of the Marian and Cinnan horrors, a realization of the saturnalia of anarchy projected by Catilina; and though Caesar certainly gained allies through this expectation-- so that the political refugees immediately put themselves in a body at his disposal, the ruined men saw in him their deliverer, and the lowest ranks of the rabble in the capital and country towns were thrown into a ferment on the news of his advance,--these belonged to the class of friends who are more dangerous than foes.
Provinces In the provinces and the dependent states Caesar had even less influence than in Italy.

Transalpine Gaul indeed as far as the Rhine and the Channel obeyed him, and the colonists of Narbo as well as the Roman burgesses elsewhere settled in Gaul were devoted to him; but in the Narbonese province itself the constitutional party had numerous adherents, and now even the newly-conquered regions were far more a burden than a benefit to Caesar in the impending civil war; in fact, for good reasons he made no use of the Celtic infantry at all in that war, and but sparing use of the cavalry.