WASHINGTON — Sen. Tim Johnson's office said he will make an announcement about the 2014 election Tuesday as several news outlets were reporting the Senate Banking Committee head plans to bow out from another term.

Speculation has been building that the South Dakota Democrat, who suffered a brain hemorrhage in 2006, will not run, which would potentially pave the way for his son, Brendan, a U.S. attorney in South Dakota, to run for the seat. Reuters was the first to report Monday afternoon that the senator had decided to step down instead of seeking a fourth term.

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