WATCH LIVE: Trump heads to rally in Kansas as Republican voters' frustrations deepen

What happened: President Donald Trump is traveling to Kansas on Monday and to Iowa later in the week, rallying his base in the final weeks before the midterm elections. Why it matters: Economic strain is becoming a growing political concern for Republicans in states they have long dominated, as voters' frustrations deepen. Key numbers: Kansas stop on Monday; Iowa later in the week; midterm elections in the final weeks.

President Donald Trump is traveling to Kansas on Monday and to Iowa later in the week, rallying his base in the final weeks before the midterm elections.

Economic strain is becoming a growing political concern for Republicans in states they have long dominated, as voters' frustrations deepen. Key numbers: Kansas stop on Monday; Iowa later in the week; midterm elections in the final weeks.