10th President of the United States, 1841-1845

As President, Tyler soon became a man without a party. He had split from the Democratic Party to be William Henry Harrison's vice-presidential running mate. The Whig program clashed with many of his lifelong beliefs. He vetoed almost every important bill. Angry Whigs tried to impeach him, the first such move against a President. They failed, but the resulting friction destroyed the Whig program. The Whig Party dumped him from its ticket in 1844, making him the only sitting President to not receive his party's nomination for re-election (of those Presidents who actively sought re-election).