5 things to consider as Conservative leadership camps release membership totals

Tuesday was the last day for people who want to vote in the Conservative leadership race to buy a federal party membership.

By the end of the week, some campaigns were disclosing how many new supporters they'd signed up, perhaps seizing an opportunity to try to keep supporters donating and motivated ahead of the May 27 vote.

Their boasts can't be officially verified. The party will only be revealing the total number of members eligible to vote, and that number isn't ready yet.

Memberships aren't votes

Signing up someone, or persuading an existing member to support a candidate, is only the first step. Campaigns have to close the deal and get these Conservativesto vote.

Turnouts fromrecent leadership elections illustrate the challenge.

• Conservative leadership rivals tout numbers atdeadline

Both the 2004 Conservative race that picked Stephen Harper and the 2013 Liberal race that picked Justin Trudeausaw roughly a third of eligible membersvote. The NDP fared a bit better when Thomas Mulcair was chosenin 2012, when just over half turned out.

It may be a few weeks before party officials verify new memberships and confirm how many areeligible to vote. Each candidate will then be given the membership list.

Several camps submitted memberships at the last minute to keep the names of new supporters secret for as long as possible, giving rivals the shortest possible window to try to steal the support of theirnew recruits.

Estimates percolating among people watching the race now havetotal memberships at about 150,000 at the low end, and beyond 180,000 on the more optimistic side.

• Conservative Memberships Likely Down From 2004 Leadership

That compares to the100,000membersthe party confirmed two months ago.

Some polling has tried to measure support among existing members. Pollsters haven't had access to lists of new members from rival camps, but it's important to know where candidates stand with the loyal base because party faithful arelikely to turn out.

• Leitch slides, O'Leary gains in Conservative Leadership Index

When someone like Kevin O'Leary says he's signed up more than 33,000 new members, it's hard to knowhow significant that is.

Other camps, like that of Erin O'Toole, say they won't release their numbers.

Voting disincentives

After controversies two weeks ago over improper membership sales, it's worth talking about how the party willensure each vote cast represents a genuine supporter.

There are two ways to vote, and both may be inconvenient or unappealing for some members.

Any riding association that wanted to could have organized a polling station. Only a few did.

Only three are west of Ontario: two in Winnipeg and one in Edmonton. Only one is in Quebec (in Montreal). The only place you can vote in person in Atlantic Canada is in Moncton.

There will be eight polling locations in Ontario:

• Ajax (candidate Chris Alexander's former riding, but also a short drive from Erin O'Toole's).
• Carleton/KanataCarleton (two Ottawa-area ridings sharing a poll).
• Milton (Lisa Raitt's riding).
• Niagara Falls.
• SimcoeGrey (Kellie Leitch's riding).
• Three ridings close to Michael Chong'sbase: Cambridge, KitchenerConestoga and his riding of WellingtonHalton Hills (Milton isn't far either).

Members attending the leadership event at theToronto Congress Centre can also vote in person on May 27.

For everyone else everywhere else, getting out this vote means mailing in ballots.

Voting packages goout later this month. But some organizers have expressed concerns that mail-invotes might also be difficult to turn out.

Members have to maila photocopy of valid identification along with their ballot.

Is it convenient for everyone to photocopy their driver's licence or health card? Will votersbe comfortable, for privacy reasons,sharing a passport scan with a political party?

Ridings are equal

On Thursday,Chong'scampaign said it had sold 17,000 new memberships:"That puts us on the path to victory," supporters were told.

In an interview with Rosemary Barton on CBC's Power & Politics, Chong laid out how his campaign settled on thatfigure.

Only 5,000 of those memberships were actually purchased directly through hiscampaign website, he said. The rest is essentially a guesstimate. "People tweeted us, Facebooked us and messaged us to say they signed up."

He said, all told, they "expect" about 5,000 people who purchased their memberships throughConservative.ca will back his leadership bid.

Another 7,000 memberships were sold on "organic websites that sprung up during the campaign," he said. Indeed, some progressive voters have joined the party to vote for Chongto stop the likes of Kellie Leitch from winning the nomination.

Earlier in the week, Raitt claimed to have sold more than 10,000 memberships and Leitchmore than30,000.

But were thoseconcentratedin a few ridings, or spread evenly across Canada?

This matters because the 338 ridings are weighted equally in this race.

While it might seem impressive to turn out several thousand votes in a few ridings, that may be no more significant thanadozen votes in other ridingswith shortmembership lists.

Ranked ballot strategy

This isn't a first-past-the-post election. Instead, voters can rank up to ten candidates on their ballot.

With 14 running and no obviousfront-runner, a candidate is unlikely to win with only first-choice votes.

Being someone'ssecond choice will be valuable because the ballot process drops candidates with little support and reallocates their backers' second (or third, or evenfourth) choices until someone has at least 50 per cent support.

Sign-up statsdon't tell us anything about second- or third-choice appeal.

Since it's not against therules tosupport several candidates (and rank them 1,2,3) there's a chance some campaigns may be counting the same people as they track supporters.

There's also been some"anyone but" campaigning, where organizers ask people who don'tnormally vote Conservative to join andstop acandidate they dislike.

• Outsiders joining Conservatives to save Tories from 'extremist' views

Is any of this numerically significant? Hard to say.But with so many contenders,this race may come down tosmall margins.

Feelings change

A few parliamentarians have changed their endorsements of candidates, either because theyhaven't liked what they've seen from a candidate, or, in at least one case, pledged support too early before someone else they liked better entered the race.

Voters, too, can change their minds.Just because acampaignsigned them up, doesn't mean that vote's locked in.

Campaigns faced a small fee for memberships they signed up in the final month: an incentive to avoid swamping the party atdeadline.

CBC News has heard anecdotes about people signing up on websites of candidates they don't supportto save money for the candidate(s) they do like.