Worried about 2020? Here’s how the election might affect your Stocks and Shares ISA!

There are three potential scenarios that could play out.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

With Election Day almost upon us, you may be wondering how all the political uncertainty will affect your portfolio going into the new decade. Polls suggest that Prime Minister Boris Johnson’s Conservative Party will secure a majority come the morning of December 13th. However, it is entirely fair to be sceptical of polling, given recent history. I won’t make any attempt to predict the election results. Instead, I’m going to look at a number of scenarios and the ramifications I think the stock market might feel going forward.

Conservative majority

As mentioned, this is currently the outcome that is considered to be most likely, given the polling data. The Conservatives are polling at 43%, up from 38% on the day the election was called. This is a marked difference to the last election in 2017, when the Theresa May-led Tories experienced a collapse in support, forcing her to make a deal with the Northern Irish Democratic Unionist Party. 

If Johnson does manage to secure his majority, the initial market reaction is expected to be positive. True, the long-run economic impacts of Brexit are estimated to be severe, but at this point, British stocks have had to contend with a tremendous amount of uncertainty. This uncertainty will be alleviated if the Conservatives get the green light to implement their Brexit deal. 

Labour majority/Remain coalition government

A core weakness of the Remain coalition has been infighting and an inability to compromise. The UK’s first-past-the-post voting system means that candidates can win with just one vote, meaning that candidates with similar platforms end up cannibalising each other’s support. Recognising this, Nigel Farage’s Brexit Party pledged not to run against Conservative candidates in marginal seats. The Remain coalition has not demonstrated similar resolve — with only a few of the smaller parties pledging not to run against one another. The Labour party has not taken any official steps towards compromise with other Remain parties. The road to victory for Remain lies through tactical voting. 

In the event of a surprise Labour victory, or more likely, a Labour-led coalition government, the initial market reaction is likely to be negative. There are two reasons for this. Firstly, Opposition Leader Jeremy Corbyn is perceived to be anti-business and in particular anti-finance. His strong pro-nationalisation stance is likely to spook many investors — indeed, his party has already called for the nationalisation of BT Broadband. That said, a coalition with a significant mix of Liberal Democrats could probably rein-in some of Labour’s more extreme policies.

Secondly, this outcome would create additional uncertainty surrounding the Brexit process, as it is not clear what the next step would be — a second referendum, a unilateral revocation of Article 50, or something else entirely. 

Hung parliament

In terms of probability, this scenario lies somewhere between the two already discussed. I think this would be the worst outcome for investors — it throws the Brexit process into further uncertainty, and offers no clear resolution to the impasse. In fact, short of another election, and another Brexit deadline extension, I see no other resolution to this scenario. Expect stocks to perform poorly if this happens.

Neither Stepan nor The Motley Fool UK have a position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Investing Articles

Is 2026 the year the Diageo share price bounces back?

Will next year be the start of a turnaround for the Diageo share price? Stephen Wright looks at a key…

Read more »

Investing Articles

Here’s my top FTSE 250 pick for 2026

UK investors looking for under-the-radar opportunities should check out the FTSE 250. And 2026 could be an exciting year for…

Read more »

Yellow number one sitting on blue background
Investing Articles

Here’s my number 1 passive income stock for 2026

Stephen Wright thinks a 5.5% dividend yield from a company with a strong competitive advantage is something passive income investors…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

Should I sell my Scottish Mortgage shares in 2026?

After a strong run for Scottish Mortgage shares, our writer wonders if he should offload them to bank profits in…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Down 35%! These 2 blue-chips are 2025’s big losers. But are they the best shares to buy in 2026?

Harvey Jones reckons he's found two of the best shares to buy for the year ahead, but he also acknowledges…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

State Pension worries? 3 investment trusts to target a £2.6m retirement fund

Royston Wild isn't worried about possible State Pension changes. Here he identifies three investment trusts to target a multi-million-pound portfolio.

Read more »

Smiling white woman holding iPhone with Airpods in ear
Dividend Shares

4 dirt-cheap dividend stocks to consider for 2026!

Discover four great dividend stocks that could deliver long-term passive income -- and why our writer Royston Wild thinks they’re…

Read more »

Young mixed-race woman jumping for joy in a park with confetti falling around her
Investing Articles

These fabulous 5 UK stocks doubled in 2025 – can they do it again next year?

These five UK stocks have more than doubled investors' money as the FTSE 100 surges. Harvey Jones wonders if they…

Read more »