After being kicked out of the Conservative leadership race over an allegation of illegal funding, Patrick Brown's campaign appears to be siding with Jean Charest.

• Read also: Conservative Party leadership: Patrick Brown knew about illegal funding, says former organizer

A spokesperson for Mr. Brown's campaign mentioned the idea in a series of highly critical tweets directed at the leadership of the Conservative Party of Canada (CPC).

“All options will continue to be considered, but if the decision stands, the message to supporters is clear. Jean Charest is the best remaining option,” said Chisholm Pothier on Twitter.

Jean Charest's campaign warmly welcomed the news.

"We are happy to see that Mr. Brown's organization and supporters are joining our camp," said Laurence Toth, press secretary for Mr. Charest's campaign.

Mr Brown was kicked out of the Tory campaign last week after an anonymous allegation of illegal funding.

The whistleblower in question, Debra Jodoin, revealed her face in broad daylight last Thursday. She argues that Mr. Brown would have told her that it was possible to work as a volunteer on his campaign, while being paid for his work by a third party company.

Brown's campaign intends to appeal the CCP's decision, as outside attorneys have already been called to duty in what could be a lengthy legal battle between the former candidate and the party.

Candidates Brown and Charest were expected to support each other as the election date, set for September 10, approaches. These are the only two candidates from the progressive-conservative fringe of the party.

PCC members who took their cards before June 4 will be entitled to choose their candidates in order of preference given the multi-round system. Thus, Mr. Brown's supporters could select the former Quebec premier as a second option and vice versa.

At the latest news, Patrick Brown's name will remain on the ballots but each vote for him will not be counted.