House and Senate showdown: How Congressional control could transform the U.S. presidency 

Dr. Imran Khalid
Credit: BBC

For obvious reasons, with less than left until the U.S. presidential election, public attention is inordinately focused on this high-stakes race. The election’s outcome is set to have major implications, not only for foreign policy but also for domestic priorities over the next four years. Yet, while the presidential contest grabs headlines, the battle for Congress warrants no less attention. In particular, the race for control of the House of Representatives could drastically influence the landscape of American politics. Every two years, all 435 seats in the House are up for grabs. Currently, the Republicans are holding a thin majority, enabling them a decisive role in maneuvering the legislative process and agenda. This congressional race, just like the presidential one, is expected to be tightly contested and could prove just as impactful in determining the course of American politics in the coming years. This year’s House race is expected to be a true tossup. FiveThirtyEight’s latest forecast slightly favors Republicans, yet the balance could shift dramatically in the final phase. Historically, with a few exceptions, the winning party in a presidential election often captures the House as well. 

Democrats currently hold a razor-thin majority, a position that has afforded them a reasonable influence over the Senate agenda. Still, that control is precarious. The stakes for both chambers are high. If Republicans gain control, it would dramatically alter the policy landscape, influencing everything from budget priorities to foreign policy stances. The Democrats are contending with dual challenges in the Senate – both immediate and strategic. The immediacy lies in this year’s specific electoral battles, where each seat could tip the balance in a narrowly divided chamber. West Virginia’s Joe Manchin, a long-time Democrat who recently went independent, is stepping down, leaving Republicans a chance to claim his seat. Similarly, Democratic stalwarts Sherrod Brown in Ohio and Jon Tester in Montana are embroiled in uphill battles against strong Republican opponents. In Michigan, Elissa Slotkin, a Democrat, faces an unexpectedly tough race against Republican Mike Rogers. Similarly tight races in Pennsylvania and Wisconsin have further raised stakes, with Democrats under pressure to hold their ground.  

For Democrats, retaining the Senate now looks like a strategic imperative, as the outcomes of these key races could profoundly alter the legislative agenda in the years to come. The Democrats’ struggle in the Senate runs far deeper than a single electoral cycle; it’s rooted in the very structure of the institution and shaped by larger political shifts. As rural America leans more strongly into Republican identity, the chamber’s composition shifts further right, even as national popular opinion may swing the other way. This alignment of geography with partisanship has intensified polarization, embedding a GOP advantage in Senate dynamics. Given this political landscape, the Democrats’ slim hold on the Senate may be short-lived. For many analysts, it’s possible that without significant shifts, Democrats could struggle for years to regain the majority, facing a chamber that structurally – and increasingly -leans toward Republican control. In the American political landscape, the president wields substantial authority, and this power has been steadily expanding over the years.  

Yet, Congress remains a pivotal counterbalance. Congress not only crafts legislation and shapes the federal budget, but it also wields oversight, with powers to scrutinize the president’s administration. The Senate, in particular, holds sway in matters of foreign policy and must approve the president’s choices for critical executive and judicial positions, creating either roadblocks or pathways for presidential initiatives. As we look toward 2025, the potential election outcomes offer distinct political dynamics. One scenario could see Democratic contender Kamala Harris as president, buoyed by a Democratic-controlled House but challenged by a Republican Senate. Alternatively, Republican candidate Donald Trump could return to the presidency with an entirely Republican Congress – or perhaps with only the Senate under Republican control, facing a Democratic House. Although unlikely, a scenario where Harris claims the presidency with a Democrat-led Congress is also on the table. This constellation of possibilities underscores the delicate interplay between presidential power and congressional influence, where control of the House and Senate will significantly shape the next administration’s reach and ambition. 

When a president’s party commands both chambers of Congress, they generally enjoy wide latitude in advancing their legislative agenda, facing minimal pushback in exercising the powers of the federal government. Conversely, a president who encounters a Congress firmly controlled by the opposition party is typically hemmed in, struggling to achieve much beyond what executive authority alone can accomplish- and even then, they must brace for relentless criticism and investigations. In cases where Congress is split, the president may find a degree of flexibility, though this hinges heavily on the willingness of both the president and Congressional leaders to engage in negotiation and compromise. The stakes of this presidential election extend far beyond U.S. borders, with ramifications not only for American citizens but also for global economic and foreign policy. However, the outcome of the House and Senate races will be pivotal in determining just how much leeway the president will actually have to execute their agenda. 

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Brussels Morning is a daily online newspaper based in Belgium. BM publishes unique and independent coverage on international and European affairs. With a Europe-wide perspective, BM covers policies and politics of the EU, significant Member State developments, and looks at the international agenda with a European perspective.
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Imran Khalid is a geostrategic analyst and columnist on international affairs. His work has been widely published by prestigious international news organizations and publications.
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