This post is part of a series in which TheStockAdvisors.com asked financial experts to name their top stock pick if McCain or if Obama wins the election.

"Go nuclear if McCain wins," says mutual fund and ETF expert Doug Fabian. Here, in his Successful Investing newsletter, the advisor looks at the Market Vectors Nuclear Energy (NYSE: NLR), an exchange-traded fund that focuses on the sector.

"What is likely to happen if McCain wins the White House? Well, based on what he has said so far in the campaign, I think we can make the following assumptions about the sectors most likely to thrive.

"When it comes to energy, we already have seen that McCain is a big fan of oil drilling. It is thus not a stretch to think that oil services and oil drilling firms are likely to thrive if the Republican takes power.

"McCain's other energy focus is nuclear, and that's good news for companies doing the yeomen work in the space. Once again, when it comes to getting invested in the best companies in a specific market sector, ETFs continue to be our best friends.

"The Market Vectors Nuclear Energy ETF is a fund designed to give investors exposure to the best companies in the nuclear energy sector.

"This investment seeks to replicate, as closely as possible, the price and yield performance of the DAXglobal Nuclear Energy index.

"The fund normally invests at least 80% of total assets in equity securities of U.S. and foreign companies primarily engaged in the nuclear energy business, which derive at least 50% of their total revenues specifically from the nuclear energy business."

Steven Halpern's TheStockAdvisors.com offers a daily look at the latest market commentary and favorite stock picks and investment ideas from the nation's leading financial newsletter advisors.