The second piece in our Election wargaming series which looks at each party's prospects at the ballot box. This examines the Liberal Democrats'drive to re-establish themselves as a major political force

The Lib Dems are set to remain fairly flat in the general election, with polling showing that they no longer have the momentum to gain the dozens of seats that some were forecasting as the campaign began.

The pro-Remain party had been steadily building steam all year, scoring major wins in the May local elections, coming second in the EU election and poaching several MPs from rival parties.

But while Jo Swinson's rejuvenated party were hoping to build on this success and gain over a dozen high-priority target seats, national polling shows that support for the party has taken a dip as Remainers swing back to Labour.

Crucial to their prospects, experts say, is continuing the sense of momentum built earlier in the year - with experts warning that Remainers could tactically vote for another Remain party if the Lib Dems no longer look like potential winners.

Jo Swinson has so far struggled to accomplish this, with the Lib Dems looking likely to make only a handful of gains of Remain-backing seats such as Richmond Park in London and North East Fife in Scotland.