With just three days remaining until the U.S. midterm elections, Democrats are holding a lead in national opinion polls as an unprecedented surge in early voting sees over 43 million Americans cast their ballots. President Donald Trump is preparing for final campaign rallies in Kansas and Iowa as both parties make their last efforts to sway voters ahead of Election Day on Tuesday.

This year's midterms are significant as they will determine the control of both the House of Representatives and the Senate, with national congressional ballot averages showing a clear Democratic advantage. The outcome will shape the legislative agenda for the remainder of President Trump's term.

According to RealClearPolling's latest national congressional ballot average, Democrats are ahead of Republicans by 8.2 percentage points, with 51.4 percent to 43.2 percent. A separate survey by The Economist/YouGov indicated that 44 percent of registered voters anticipate a Democratic majority in the House, while 31 percent expect Republicans to maintain control. The Senate outlook is closer, with 39 percent expecting a Democratic majority and 36 percent a Republican one.

Kyle Kondik, managing editor of Sabato’s Crystal Ball at the University of Virginia Center for Politics, suggested that the strong Democratic lead in national House polling indicates a likely flip of the chamber. However, he noted that the Senate race remains more uncertain, though a Democratic shift is still possible.

An analysis by the Associated Press revealed that more than 43 million Americans had already voted early, either in person or by mail, five days before Election Day. This figure represents an increase of nearly 10 million compared to the same period before the 2022 midterms. States with competitive Senate races have seen some of the most significant jumps in early turnout.

In Texas, over 6.3 million people had voted early as of Wednesday, a substantial 50 percent increase from the 4.2 million recorded at the same point in 2022. Voters were seen continuing to arrive at polling stations in Houston as the state's early voting period neared its end.

Georgia also reported a surge in early voting, with more than 2.5 million ballots cast by Friday morning. This number has already surpassed the 2.3 million recorded during the entire early voting period in 2022, highlighting a significant increase in voter participation.

The high volume of early voting suggests strong engagement from the electorate. The final days of the campaign will focus on mobilizing remaining voters and reinforcing party messages as the nation approaches a critical election.