New Delhi, Aug. 14 -- A dozen congressional incumbents lost their primaries in this election cycle, with multiple contests still to come over the next month. In the upper chamber, Sens. Bill Cassidy (R-La.) and John Cornyn (R-Texas) lost their primaries earlier this year to challengers backed by President Donald Trump.

In the House, 10 incumbents lost their primaries, with three Republicans going down and seven Democrats losing - in part due to challenges from the party's left flank, the Hill reported.

The three Republican incumbents who fell short include Dan Crenshaw of Texas, Thomas Massie of Kentucky, and Andy Ogles of Tennessee.

Here are the congressional incumbents who have lost their primaries, so far.

Sen. Bill Cassidy of Loui...