By RYAN FISHERAssociated PressSenators are scheduled to begin voting in the 2018 midterm elections on Oct. 1, and Democrats will have the upper hand in the chamber.

President Donald Trump is still a candidate to be re-elected, but Democrats control the Senate and the White House and are likely to gain seats in the House of Representatives.

The 2018 midterm election was the most expensive midterm election in U.S. history, with the average price tag for all state and local races at $1.3 billion.

In 2020, there are only eight senators in the U.N. General Assembly.

Republicans hold all three chambers of Congress.

Democrats control a slim majority in the Senate, and will be expected to retain it, but the GOP-controlled House will be looking to pass a budget and tax reform package.

The Senate and House also hold the purse strings for federal agencies and for most state governments.