Right now we have a Republican President, Donald J. Trump.
In elections, democratic and republican candidates are against each other, to win the campaign. Then, the Democratic and Republican, who won go try to become president.
So, the answer to you question is The Republicans and The Democratic parties.
he modern political party system in the U.S. is dominated by the Democratic Party and the Republican Party. These two parties have won every United States presidential election since 1852 and have controlled the United States Congress to some extent since at least 1856.
