Nov 7 (Reuters) - Democratic victories this week have

caught investors' attention, signaling a potential comeback

after the party's bruising defeat during last year's election.

A strong showing for congressional Democrats at the midterm

elections in 2026 could push and revive policies favoring

sectors sidelined by the GOP.

While Trump would still have to sign any legislation,

control of one or both chambers of Congress would hand Democrats

command over key committees, giving them the power to launch

investigations and call Trump officials to Capitol Hill for

public hearings.

Although markets are not pricing a full shift yet, investors

are watching some key sectors.

ENERGY AND CLEAN ENERGY

A Democratic victory in either chamber of Congress could

slow or reverse some of President Trump's measures against clean

energy projects.

Investors withdrew a record $8.6 billion from global

sustainable funds in the first quarter, according to research

from Morningstar, which attributed the outflows largely to

Trump's shift against climate and social initiatives.

The industry has since regained its footing, helped by

surging energy demand from the rapid growth of artificial

intelligence, which requires massive power for data centers.

The U.S. president has championed fossil fuels, pledging to

"drill, baby, drill" as part of a plan to boost oil and gas

output.

His administration also withdrew the U.S. from the Paris

climate accord and scrapped $7.56 billion in funding for clean

energy projects it said would not deliver adequate taxpayer

returns.

Democrats, who have championed climate action, are expected

to try to block much of that agenda if given the chance.

HEALTHCARE

Healthcare has been a major political flashpoint and a key

factor behind the ongoing U.S. government shutdown, now the

longest ever.

If Democrats took the Senate next year, they would likely

revive efforts to expand the Affordable Care Act, strengthen

Medicaid funding and push back against Trump's attempts to roll

back coverage mandates.

Such a shift would likely benefit health insurers with large

Medicaid and Affordable Care Act businesses. Hospital chains

could also gain from higher insured patient volumes.

CRYPTOCURRENCIES

The crypto industry and many tokens have boomed under

President Trump's crypto-friendly administration, with bitcoin

reaching multiple new highs. Democrats have opposed its

light-touch stance, warning of fraud, market manipulation, money

laundering and other risks.

After Tuesday's strong showing, Democrats may negotiate

harder on a major crypto bill in the Senate, potentially

weighing on some crypto tokens and listed crypto exchanges.

If they win the Senate next year, they may ramp up scrutiny

of any moves by the securities regulator that could give crypto

companies a free hand to launch new products.

FINANCIALS

The banking industry has benefited from looser oversight of

deals under Republican agencies, de-regulatory efforts aimed at

freeing up bank capital and the weakening of the Consumer

Financial Protection Bureau, which oversees consumer lending.

The S&P 500 banks index has jumped over 22% so far

this year, outperforming the benchmark S&P 500 index's

15.6% gain.

A Senate led by Democrats would have more power to

interrogate and potentially slow the de-regulatory changes.

BIG TECH

Progressives in Congress would also likely renew efforts to

rein in Big Tech, whose market dominance has expanded

dramatically. Rapid advances in artificial intelligence,

meanwhile, have deepened their influence.

While the current administration has focused on ensuring the

U.S. stays ahead of China in the AI race, Democrats may take a

harder line, scrutinizing Big Tech partnerships more closely and

tightening antitrust oversight.