The eight candidates need to gain at least 30 votes to stay in the contest to replace Boris Johnson.
Trade minister Ms Mordaunt - who currently has the second highest number of Tory MPs backing her - will also formally launch her campaign on Wednesday morning.
On Tuesday, Foreign Secretary Ms Truss secured support from two Johnson loyalists - minister Jacob Rees-Mogg and Culture Secretary Nadine Dorries.At midday, before voting starts, Prime Minister Boris Johnson will head to Parliament for his first Prime Minister's Questions since he announced his resignation.his handlingAsked who he would support in the race to replace him, Mr Johnson said he "wouldn't want to damage anyone's chances with my support.
Australia Latest News, Australia Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
MPs push through legal change to let agency staff cover for striking workersTrade unions have strongly condemned the measures, while ministers have been warned they will 'exacerbate' industrial tensions
Read more »
LBC Views: Tory MPs must give the party faithful a proper choice'Tory MPs need to make sure that the best candidates go forward with the clearest vision for the country's future.' 'Hopefully, that won't be too much to ask...'
Read more »
Tory MPs are 'dividing themselves into gangs and hunting each other', says Andrew MarrAndrew Marr has said Conservative MPs are 'dividing themselves into gangs and going hunting for each other' as the Tory leadership contest continues.
Read more »
Politics live: Tory MPs vying to replace Johnson to be narrowed down; poll reveals who party members are backingThe race to choose a new Conservative leader - and therefore prime minister - will kick off tomorrow and a new PM will be in place on 5 September. Sky's joncraig has the latest on the rules for the leadership election 📺 Sky 501 and YouTube
Read more »