The latest I've heard from Latvia is that whereas Pēdējā vēstule and Dejo Tā were the only ones the general public had heard of before the first semi, Saule Riet has now reached into the public mind and is considered second favourite. Can the Latvians of this forum add more input?
Judging by the Internet, the Latvian opinion of Saule Riet is very divided, but any publicity is good publicity and no minus votes can be given. What's worth to remember is that Pēdējā vēstule still is going quite strong. Then again, Latvia's voting result has seemingly made little sense some years, so the winner could be anyone.