Here in Minnesota, we call that a Sample Ballot.
Here are a couple of examples: http://www.scc.net/~t-bonham/2006General.pdf
http://sd62.danmcc.com/images/sampleballot2006GeneralSD62-ltr.png
These are one of the most effective things the party provides to its endorsed candidates. People who work as Election Judges here will tell you that a large number of voters come into the polling place carrying one of these Sample Ballots, and vote from it. In cases where there are multiple candidates (like the 4 Minneapolis School Board seats this time), it’s actually necessary to rotate the order of the names, otherwise they tend to finish in the order listed.
It is considered very effective, and one of the most cost-effective ways to spend party money. (The actual cost this year was about 20¢ apiece, including everything – printing, addressing, & postage.) The only item I can see as possibly more cost-effective is GOTV (Get-Out-The-Vote) phone calls targeted to your known supporters.
There is a great deal of effort spent in targeting these mailings appropriately, to get the best bang for the buck. (And that involves a whole lot of pre-effort, in building the database to enable this targeting. We started grassroots work 18 months ago, knocking on doors to obtain this info, and entering it into our voter database.)
A lot of effort went into reaching what we called ‘drop-off democrats’. Those are people who vote democratic in Presidential election years, but drop off (don’t vote) in mid-term elections. We felt that if we could identify them, and get them out to vote, they would vote democratic and give us the additional votes needed to win.
But to do this, the state party was neglecting some other groups that our local district felt were important. Specifically, those who vote democratic, and who always turn out to vote (primarily the elderly, and party regulars). The state party felt it was unnecessary to mail Sample Ballots to them, they would vote anyway. But our District felt that the reminder was needed, and 20¢ was a small price to pay for an almost sure democratic vote. (Plus we had several local races that were non-partisan – the ballot would not indicate who the democratic candidates were.)
Another disagreement was over known regular voters whose party affiliation was unidentified. The state party did not want to mail to any of these. Our district pointed out that many of our precincts voted between 75% - 90% democratic. So we felt that in mailing to them at random, we had between a 3-1 up to 9-1 odds that we would reach a democratic voter. And we felt those odds were worth the cost.
In the end, our district party went out and raised money to send an additional 25,000 Sample Ballots into our district, targeting these specific groups (in addition to the regular targets). And it seems to have worked: all our local candidates were elected (with over 80% of the votes), and we had the best turnout in the entire metro area of the state (over 72%). We really believe in Sample Ballots!