According to the Constitution of 1848, he had to step down at the end of his term, so Louis Napoleon sought a constitutional amendment to allow him to succeed himself, arguing that four years were not enough to fully implement his political and economic program. He toured the country and gained support from many of the regional governments and many within the Assembly. The vote in July 1851 was 446 to 278 in favor of changing the law and allowing him to run again, but this was short of the two-thirds majority needed to amend the constitution.