Will Cassidy "runoff" with all the votes?

http://www.usatoday.com/story/news/politics/elections/2014/2014/11/05/louisiana-senate-shifts-to-runoff-mode/18549555/
The article "Louisiana Senate race shifts into runoff mode" basically talks about the second senatorial election that is going to happen in the state of Louisiana in early December. Because no candidate was able to get over the 50% threshold, they are required to do a runoff race between the two highest vote-getting candidates. The incumbent democrat Mary Landrieu was able to slightly edge the leading republican candidate Bill Cassidy by a popular vote of 42% to 41%. Now that the two candidates have a month before the state votes again, they must once again rally their supporters to the polls. It is thought that although Landrieu had more votes than Cassidy in the original election, Cassidy will be able to gain the edge to win in this runoff. This is due to the fact that there was a second republican candidate who got 14% of the votes during the election who took many votes away from Cassidy. Now that his second republican is off the ballot, it is highly likely that he will gain many of the republican votes that are now undecided.

I think that the concept of a runoff is a very good idea. I think in this situation it makes a lot of sense and was built specifically for this purpose. There was only a slight edge for the democratic candidate over the number one republican candidate, but now that they are the only two on the ballot that means that there are a lot more republican voters that will now either vote for Cassidy or choose not to vote. I think that Cassidy will end up winning the runoff.

This decision is a highly impactful one. The switch between an already established senator to a young, inexperienced one is very different especially when it will be a switch from a democrat to a republican. If landrieu ends up winning it won't mean much change since she has been the senator for the past 6 years.