Causes
In 1848, Louis-Napoleon Bonaparte was elected President of France through universal suffrage, taking 74% of the vote. He did this with the support of the Parti de l'Ordre after running against Louis Eugène Cavaignac. Subsequently, he was in constant conflict with the members (députés) of the Assemblée Nationale.
Contrary to the Party's expectations that Louis-Napoleon would be easy to manipulate (Adolphe Thiers had called him a "cretin whom we will lead "), he proved himself an agile and cunning politician. He succeeded in imposing his choices and decisions on the Assemblée, which had once again become conservative in the aftermath of the June Days Uprising in 1848. He broke away from the control of the Parti de l'Ordre and created the Ministère des Commis, appointing General Hautpoul as its head, in 1849. On 3 January 1850, he dismissed Changarnier, a dissident in the Parti de l'Ordre, thereby provoking an open conflict within the party. He also actively encouraged the creation of numerous anti-parliament newspapers and acquired the support of 150 members of Parliament, the "Parti de l'Elysée".
The provisions of the constitutions that prohibited an incumbent president from seeking re-election appeared to force the end of Louis-Napoleon's rule in December 1852. Not one to admit defeat, Louis-Napoleon spent the first half of 1851 trying to force changes to the constitution through Parliament so he could be re-elected. Bonaparte travelled through the provinces and organised petitions to rally popular support. Two-thirds of General Council supported Louis-Napoleon's cause, but in the Assembly, supporters of the Duke of Orléans, led by Thiers, concluded an alliance with the far left to oppose Louis-Napoleon's plans. In January 1851, the Parliament voted no confidence in the Ministère des Commis. On 19 July, it refused the constitutional reform proposed by Louis-Napoleon, also scrapping universal suffrage in an effort to break popular support for Bonaparte.
Read more about this topic: French Coup Of 1851